MESON Chess Problem Database
Problem Display
PID: 250623 (5B2/np1N1R2/1R5Q/p1PrP3/3kr2p/2N1p2K/1P2B3/8 w - - 0 1)
Usmanov, Rashid R
Schach, 1986
#2
11 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Rxc5
- 2.Bxc5#
- 1...Rd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...a4
- 2.Rb4#
- 1...Rf4
- Tries
- 1.Rd6?
- threat
- 2.Rxd5#
- 1...Rxd6
- 2.Qxd6#
- 1...Rxe5!
- threat
- 1.Rf4?
- threat
- 2.Rxe4#
- 1...Rxf4
- 2.Qxf4#
- 1...Rxe5!
- threat
- 1.Qf4?
- threat
- 2.Qxe4#
- 1...Rxf4
- 2.Rxf4#
- 1...Rxe5!
- threat
- 1.Qc6?
- threat
- 2.Qa4#
- 2.Qxd5#
- 1...Rexe5
- 2.Qa4#
- 1...Rxc5
- 2.Bxc5#
- 2.Qxe4#
- 2.Qxc5#
- 1...Rdxe5
- 2.Qa4#
- 1...Rxd7
- 2.Qxe4#
- 1...Sxc6
- 2.Sb5#
- 1...Rd6
- 2.Qa4#
- 2.Qxe4#
- 2.Qxd6#
- 1...Sb5
- 2.Sxb5#
- 2.Qxd5#
- 1...a4
- 2.Rb4#
- 2.Qxa4#
- 2.Qxd5#
- 1...bxc6!
- threat
- 1.Qd6?
- threat
- 2.Qxd5#
- 1...Rxd6
- 2.Rxd6#
- 1...Rxe5!
- threat
- 1.Qe6?
- threat
- 2.Qxd5#
- 1...Rxc5
- 2.Bxc5#
- 1...Rdxe5
- 2.Qc4#
- 1...Rxd7
- 2.Rxd7#
- 1...Rd6
- 2.Rxd6#
- 2.Qc4#
- 2.Qxd6#
- 1...Rexe5!
- threat
- 1.Qg6?
- threat
- 2.Qxe4#
- 1...Rexe5
- 2.Qd3#
- 1...Rf4
- 2.Rxf4#
- 2.Qd3#
- 1...Rg4
- 2.Qd3#
- 2.Qxg4#
- 1...Rdxe5!
- threat
- 1.Qh7?
- threat
- 2.Qxe4#
- 1...Rexe5
- 2.Qd3#
- 1...Rf4
- 2.Rxf4#
- 2.Qd3#
- 1...Rg4
- 2.Qd3#
- 1...Rdxe5!
- threat
- 1.Qh8?
- 1...Rexe5
- 2.Rf4#
- 1...Rxc5
- 2.Bxc5#
- 1...Rdxe5
- 2.Rd6#
- 1...Rxd7
- 2.Rxd7#
- 1...Rf4
- 2.Rxf4#
- 1...Rd6
- 2.Rxd6#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...a4
- 2.Rb4#
- 1...Rg4!
- 1...Rexe5
- 1.Rd6?
- Keys
- 1.Qg7!
- 1...Rexe5
- 2.Rf4#
- 1...Rxc5
- 2.Bxc5#
- 1...Rdxe5
- 2.Rd6#
- 1...Rxd7
- 2.Rxd7#
- 1...Rf4
- 2.Rxf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rd6
- 2.Rxd6#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...a4
- 2.Rb4#
- 1...Rexe5
- 1.Qg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(f);OGATE,XP(E)::B(K),XR(f)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- P(e);N_GUARD::R(G)
- Tries
- Try
- R(G);P_PINR(f)
- Threat
- R1(G),XR(f)
- Vars
- R(f);N_SPINR(f),OGATE,XR(G)::QAR2(H),XR(f)
- Refutation
- R(c);XP(F)
- Try
- R(J);P_PINR(c)
- Threat
- R1(J),XR(c)
- Vars
- R(c);N_SPINR(c),OGATE,XR(J)::QAR2(H),XR(c)
- Refutation
- R(f);XP(F)
- Try
- Q(H);P_PINR(c)
- Threat
- QAR1(H),XR(c)
- Vars
- R(c);N_SPINR(c),OGATE,XQ(H)::R(J),XR(c)
- Refutation
- R(f);XP(F)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(c);XP(F)::QAR(H)
- R(f);XP(F)::QAR(H)
- R(f);OGATE,XS(I)::QAR1(H),XR(c)
- S(g);N_GUARD,XQ(H)::S(C)
- Refutation
- P(h);XQ(H)
- Try
- Q(H);P_PINR(f)
- Threat
- QAR1(H),XR(f)
- Vars
- R(f);N_SPINR(f),OGATE,XQ(H)::R(G),XR(f)
- Refutation
- R(c);XP(F)
- Try
- Q(H);
- Threat
- QAR1(H),XR(f)
- Vars
- R(f);OGATE,XP(E)::B(K),XR(f)
- R(f);OGATE,XP(F)::QAR1(H)
- R(f);OGATE,XS(I)::R(J),XR(f)
- Refutation
- R(c);XP(F)
- Try
- Q(H);
- Threat
- QAR1(H),XR(c)
- Vars
- R(c);OGATE,XP(F)::QAR1(H)
- Refutation
- R(f);XP(F)
- Try
- Q(H);
- Threat
- QAR1(H),XR(c)
- Vars
- R(c);OGATE,XP(F)::QAR1(H)
- R(c);OGATE::QAR1(H)
- Refutation
- R(f);XP(F)
- Try
- Q(H);
- Vars
- R(c);OGATEB,P_SPINR(c),XP(F)::R(J)
- R(f);OGATE,XP(E)::B(K),XR(f)
- R(f);OGATEB,P_SPINR(f),XP(F)::R(G)
- R(f);OGATE,XS(I)::R(J),XR(f)
- R(c);OGATEB::R(J),XR(c)
- R(f);OGATEB::R(G),XR(f)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- P(e);N_GUARD::R(G)
- Refutation
- R(c);
- Try
- Actual
- Q(H);
- Vars
- R(c);OGATEB,P_SPINR(c),XP(F)::R(J)
- R(f);OGATE,XP(E)::B(K),XR(f)
- R(f);OGATEB,P_SPINR(f),XP(F)::R(G)
- R(f);OGATE,XS(I)::R(J),XR(f)
- R(c);OGATEB::R(J),XR(c)
- R(c);OGATEB::QAR(H),XR(c)
- R(f);OGATEB::R(G),XR(f)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- P(e);N_GUARD::R(G)
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