MESON Chess Problem Database
Problem Display
PID: 242344 (7K/p2pN3/8/r1R1P2p/1B1k2p1/6R1/3N1p2/bb1Qr3 w - - 0 1)
Morra, Juan Carlos
Problemas, 1958
#2
8 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sxb1#
- 2.Sb3#
- 2.Sf5#
- 1...Rxe5
- 2.Rc4#
- 1...Ra2
- 2.Rd5#
- 1...Ra3
- 2.Rd5#
- 1...Ra4
- 2.Rd5#
- 1...Ra6
- 2.Rd5#
- 1...Ba2
- 2.Sf5#
- 1...Be4
- 2.Sb3#
- 1...Bf5
- 2.Sxf5#
- 1...d5
- 2.Sc6#
- 1...d6
- 2.Sc6#
- 1...Re4
- Tries
- 1.Qc2?
- threat
- 2.Sb3#
- 2.Sf5#
- 2.Rd3#
- 2.Qc4#
- 1...Rxe5
- 2.Sb3#
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 1...Rxc5
- 2.Qxc5#
- 1...d5
- 2.Sc6#
- 1...f1Q
- 2.Sb3#
- 1...f1B
- 2.Sb3#
- 2.Sf5#
- 1...f1R
- 2.Sb3#
- 2.Rd3#
- 2.Qc4#
- 1...Rc1
- 2.Sb3#
- 2.Sf5#
- 2.Rd3#
- 1...Re3
- 2.Sf5#
- 2.Qc4#
- 1...Ra3
- 2.Sf5#
- 2.Rd5#
- 2.Qc4#
- 1...Bc3
- 2.Sb3#
- 2.Sf5#
- 2.Rd3#
- 2.Qxc3#
- 1...Ba2
- 2.Sf5#
- 2.Rd3#
- 2.Qd3#
- 1...Bxc2!
- threat
- 1.Qe2?
- threat
- 2.Sb3#
- 2.Rc4#
- 2.Qc4#
- 1...Rxc5
- 2.Sb3#
- 1...f1Q
- 2.Sb3#
- 2.Rc4#
- 1...f1B
- 2.Sb3#
- 2.Rc4#
- 1...Rc1
- 2.Sb3#
- 2.Qxf2#
- 2.Qe3#
- 1...Ra3
- 2.Rc4#
- 2.Rd5#
- 2.Qc4#
- 1...Ba2
- 2.Sf5#
- 2.Rd3#
- 2.Qd3#
- 1...Bc2
- 2.Rc4#
- 2.Qc4#
- 1...Bd3
- 2.Sb3#
- 2.Rxd3#
- 2.Qxd3#
- 1...Be4
- 2.Sb3#
- 2.Qc4#
- 1...d5
- 2.Sb3#
- 2.Sc6#
- 1...Rxe2!
- threat
- 1.Qb3?
- threat
- 2.Qc4#
- 2.Qd5#
- 1...Rxe5
- 2.Rc4#
- 2.Qc4#
- 1...d5
- 2.Sc6#
- 2.Qxd5#
- 1...f1Q
- 2.Qd5#
- 1...f1B
- 2.Qd5#
- 1...Rc1
- 2.Qd5#
- 2.Qe3#
- 1...Ba2
- 2.Sf5#
- 2.Rd3#
- 2.Qd3#
- 1...Bd3
- 2.Rxd3#
- 2.Qd5#
- 2.Qxd3#
- 1...Be4
- 2.Qc4#
- 1...Rxc5!
- threat
- 1.Qxg4+?
- 1...Re4
- 2.Sb3#
- 2.Sf5#
- 2.Qxd7#
- 1...Be4
- 2.Sb3#
- 2.Sf5#
- 1...hxg4!
- 1...Re4
- 1.Qxb1?
- threat
- 2.Sb3#
- 2.Sf5#
- 2.Rd3#
- 2.Qd3#
- 1...Rxb1
- 2.Sf5#
- 1...Rxe5
- 2.Sb3#
- 2.Rd3#
- 2.Rc4#
- 2.Qd3#
- 1...d5
- 2.Sc6#
- 1...f1Q
- 2.Sb3#
- 1...f1B
- 2.Sb3#
- 2.Sf5#
- 1...f1R
- 2.Sb3#
- 2.Rd3#
- 2.Qd3#
- 1...Re3
- 2.Sf5#
- 1...Ra3
- 2.Sf5#
- 2.Rd5#
- 1...Rxc5!
- threat
- 1.Qc2?
- Keys
- 1.Qa4!
- threat
- 2.Qxd7#
- 1...Rxe5
- 2.Rc4#
- 1...Rxa4
- 2.Rd5#
- 1...Rxc5
- 2.Bc3#
- 1...d5
- 2.Sc6#
- 1...Rb5
- 2.Qxa1#
- 1...Ra6
- 2.Rd5#
- 1...Ba2
- 2.Sf5#
- 1...Be4
- 2.Sb3#
- 1...Bf5
- 2.Sxf5#
- 1...d6
- 2.Sc6#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(c);SBLOCK,XP(F)::R1(E)
- R(g);N_GUARD::R1(E)
- B(b);N_GUARD::S(G)
- B(b);SBLOCK::QAR(A)+S(B),DCHECK
- B(b);N_GUARD::S(G),XB(b)
- P(j);N_GUARD::S(G)
- Tries
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(g);OGATE,XR(E)::QAB1(A),XR(g)
- P(j);N_GUARD::S(G)
- P(d);::S(B)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(g);XR(E)::S(B)
- Refutation
- R(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(d);::QAR1(A)
- B(b);::QAR1(A)
- Refutation
- R(g);XR(E)
- Try
- Q(A);CHECK,XP(f)
- Refutation
- P(h);XQ(A)
- Try
- Q(A);XB(b)
- Threat
- DUALS(4)
- Vars
- R(c);XQ(A)::S(G)
- P(j);N_GUARD::S(G)
- P(d);::S(B)
- R(c);::S(G)
- Refutation
- R(g);XR(E)
- Try
- Actual
- Q(A);
- Threat
- QAR(A),XP(j)
- Vars
- R(c);SBLOCK,XP(F)::R1(E)
- R(g);N_GUARD,XQ(A)::R1(E)
- R(g);SBLOCK,XR(E)::QAR(A)+B(D),DCHECK
- P(j);N_GUARD::S(G)
- R(g);N_GUARD::QAB(A),XB(a)
- R(g);N_GUARD::R1(E)
- B(b);N_GUARD::S(G)
- B(b);SBLOCK::S(B)
- B(b);N_GUARD::S(G),XB(b)
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