EIGRP ping issue

I configured EIGRP in R1 and R2 , but for some reason I cannot ping from R1 to 192.168.23.3, even though there is an EIGRP route in R1 for 192.168.23.0

1#sh run | sec eigrp
router eigrp 1
 network 192.168.12.0
R1#

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router eigrp 1
 network 0.0.0.0
ip route 0.0.0.0 0.0.0.0 FastEthernet0/0

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R1#sh ip route eigrp

D*    0.0.0.0/0 [90/30720] via 192.168.12.2, 00:06:03, FastEthernet0/0
D     192.168.23.0/24 [90/30720] via 192.168.12.2, 00:06:03, FastEthernet0/0
R1#

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I cannot ping  R3 from R1



R1#ping 192.168.23.3

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.23.3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1#

FRom R2 I can ping:
R2#ping 192.168.23.3

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.23.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/19/24 ms
R2#
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