MESON Chess Problem Database
Problem Display
PID: 117813 (4n3/8/1Np1RP2/8/1PpkNK1Q/5p1P/qpRPBp1p/1n3r2 w - - 0 1)
Novis Filho, Mario
Rio de Janeiro-400 JT (Boletim da UBP), 1965
#2
11 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Rxc4#
- 1...Qa3
- 2.Rxc4#
- 1...Qa4
- 2.Rxc4#
- 1...Qa5
- 2.Rxc4#
- 1...Qa7
- 2.Rxc4#
- 1...Qa8
- 2.Rxc4#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Rg1
- 2.Qxf2#
- 1...Rh1
- 2.Qxf2#
- 1...Sxd2
- 2.Rxd2#
- 1...Sc3
- 2.dxc3#
- 1...Sd6
- 2.Rxd6#
- 1...Sxf6
- 2.Qxf6#
- 1...Sg7
- 2.Rd6#
- 1...Qa1
- Tries
- 1.Kf5?
- threat
- 2.Sxf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...Qa5+
- 2.Sc5#
- 1...Sd6+
- 2.Sxd6#
- 2.Rxd6#
- 1...Sxd2
- 2.Sxd2#
- 1...Sxf6
- 2.Sxf6#
- 2.Qxf6#
- 1...fxe2
- 2.Sxf2#
- 2.Sc5#
- 1...Rg1
- 2.Sg3#
- 2.Qxf2#
- 1...Sc3
- 2.Sxc3#
- 1...c3
- 2.Sxf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...c5
- 2.Sxf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sxc5#
- 2.Sg5#
- 2.Sd6#
- 1...Sg7+!
- threat
- 1.Sxf2?
- threat
- 2.Kxf3#
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...Rxf2
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 2.Qxf2#
- 1...Sxf6
- 2.Qxf6#
- 1...fxe2
- 2.Kf3#
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...h1Q
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...h1S
- 2.Kxf3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...h1B
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...Qb3
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...Qa3
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Rxc4#
- 2.Re4#
- 1...Qa5
- 2.Kxf3#
- 2.Kg3#
- 2.Rxc4#
- 2.Re4#
- 1...Rg1
- 2.Re4#
- 1...Sc3
- 2.dxc3#
- 1...Sd6
- 2.Rxd6#
- 1...Sg7
- 2.Kxf3#
- 2.Kg3#
- 2.Kg5#
- 2.Re4#
- 2.Rd6#
- 1...Sxd2!
- threat
- 1.Sg3?
- threat
- 2.Kxf3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...Sxd2
- 2.Sf5#
- 1...Sxf6
- 2.Sf5#
- 2.Qxf6#
- 1...h1Q
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...h1B
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...Qb3
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...Qa3
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Rxc4#
- 2.Re4#
- 1...Qa5
- 2.Kxf3#
- 2.Rxc4#
- 2.Re4#
- 1...Sc3
- 2.Sf5#
- 2.dxc3#
- 1...Sd6
- 2.Rxd6#
- 1...Sg7
- 2.Kxf3#
- 2.Kg5#
- 2.Re4#
- 2.Rd6#
- 1...fxe2!
- threat
- 1.Sc5?
- threat
- 2.Kxf3#
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...Sxf6
- 2.Qxf6#
- 1...fxe2
- 2.Kf3#
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...h1Q
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...h1S
- 2.Kxf3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...h1B
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...Qb3
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Re4#
- 1...Qa3
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Rxc4#
- 2.Re4#
- 1...Rg1
- 2.Re4#
- 2.Qxf2#
- 1...Sc3
- 2.dxc3#
- 1...Sd6
- 2.Rxd6#
- 1...Sg7
- 2.Kxf3#
- 2.Kg3#
- 2.Kg5#
- 2.Re4#
- 2.Rd6#
- 1...Sxd2!
- threat
- 1.Sd6?
- threat
- 2.Kxf3#
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...Sxd2
- 2.Sf5#
- 1...Sxd6
- 2.Rxd6#
- 1...Sxf6
- 2.Sf5#
- 2.Qxf6#
- 1...h1Q
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...h1S
- 2.Kxf3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...h1B
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...Qb3
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Re4#
- 1...Qa3
- 2.Kg3#
- 2.Kf5#
- 2.Kg5#
- 2.Sf5#
- 2.Rxc4#
- 2.Re4#
- 1...Qa5
- 2.Kxf3#
- 2.Kg3#
- 2.Rxc4#
- 2.Re4#
- 1...Rg1
- 2.Sf5#
- 2.Re4#
- 2.Qxf2#
- 1...Sc3
- 2.Sf5#
- 2.dxc3#
- 1...Sg7
- 2.Kxf3#
- 2.Kg3#
- 2.Kg5#
- 2.Re4#
- 1...fxe2!
- threat
- 1.Rxe8?
- threat
- 2.Rd8#
- 1...Qa5
- 2.Rxc4#
- 1...Qa7
- 2.Rxc4#
- 1...Qa8
- 2.Rxc4#
- 1...Sc3
- 2.dxc3#
- 1...c3!
- threat
- 1.Qg5?
- threat
- 2.Qc5#
- 2.Qe5#
- 1...Qa5
- 2.Rxc4#
- 1...c5
- 2.Qxc5#
- 2.Qd5#
- 2.Qe5#
- 1...fxe2!
- threat
- 1.Qh5?
- threat
- 2.Qc5#
- 2.Qe5#
- 1...Qa5
- 2.Rxc4#
- 1...c5
- 2.Qxc5#
- 2.Qd5#
- 2.Qe5#
- 1...fxe2!
- threat
- 1.Kf5?
- Keys
- 1.Kg5!
- threat
- 2.Sxf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 1...Qa5+
- 2.Sc5#
- 1...Rg1+
- 2.Sg3#
- 1...Sxd2
- 2.Sxd2#
- 1...Sxf6
- 2.Sxf6#
- 1...fxe2
- 2.Sxf2#
- 2.Sc5#
- 1...Sc3
- 2.Sxc3#
- 1...Sd6
- 2.Sxd6#
- 1...c3
- 2.Sxf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sd6#
- 1...c5
- 2.Sxf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sxc5#
- 2.Sd6#
- threat
- 1.Kg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- Q(c);N_GUARD::R1(A),XP(h)
- R(b);N_GUARD::QAB(H),XP(e)
- S(a);OGATE,XP(B)::R(A),XS(a)
- S(a);OGATE::P(B),XS(a)
- S(k);N_GUARD::R(J),XS(k)
- S(k);OGATE,XP(K)::QAB(H),XS(k)
- S(k);N_GUARD::R(J)
- Tries
- Try
- K(G);P-FLIGHT
- Threat
- DUALS(6)
- Vars
- Q(c);CHECK::QAR(H)+S(F)
- S(a);XP(B)::QAR(H)+S(F),XS(a)
- S(a);::QAR(H)+S(F),XS(a)
- Refutation
- S(k);CHECK
- Try
- S(F);XP(e)
- Threat
- DUALS(5)
- Vars
- S(k);OGATE,XP(K)::QAB(H),XS(k)
- R(b);::R1(J)
- S(a);OGATE::P(B),XS(a)
- S(k);N_GUARD::R(J),XS(k)
- Refutation
- S(a);XP(B)
- Try
- S(F);
- Threat
- DUALS(5)
- Vars
- S(a);XP(B)::S(F)
- S(k);N_GUARD::R(J),XS(k)
- Refutation
- P(g);XB(C)
- Try
- S(F);
- Threat
- DUALS(5)
- Vars
- S(k);OGATE,XP(K)::QAB(H),XS(k)
- S(a);OGATE::P(B),XS(a)
- S(k);N_GUARD::R(J),XS(k)
- Refutation
- S(a);XP(B)
- Try
- S(F);
- Threat
- DUALS(6)
- Vars
- S(a);XP(B)::S(F)
- S(k);OGATE,XS(F)::R(J),XS(k)
- Refutation
- P(g);XB(C)
- Try
- R(J);XS(k)
- Threat
- R(J)
- Vars
- Q(c);N_GUARD::R1(A),XP(h)
- S(a);OGATE::P(B),XS(a)
- Refutation
- P(h);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD::R1(A),XP(h)
- Refutation
- P(g);XB(C)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD::R1(A),XP(h)
- Refutation
- P(g);XB(C)
- Try
- Actual
- K(G);S_FLIGHT
- Threat
- DUALS(5)
- Vars
- Q(c);CHECK::QAR(H)+S(F)
- R(b);CHECK::QAR(H)+S(F)
- S(a);XP(B)::QAR(H)+S(F),XS(a)
- S(k);XP(K)::QAR(H)+S(F),XS(k)
- S(a);::QAR(H)+S(F),XS(a)
- S(k);::QAR(H)+S(F),XS(k)
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