MESON Chess Problem Database
Problem Display
PID: 177961 (nKN4n/1R2p2q/2kBp1P1/2PR4/1PB5/r7/6N1/1r5Q w - - 0 1)
Markovsky, Grigory F
Sahs (Latvia), 1987
#2
11 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxg6
- 2.Sxe7#
- 1...Qxh1
- 2.Sxe7#
- 1...Qh2
- 2.Sxe7#
- 1...Qh3
- 2.Sxe7#
- 1...Qh5
- 2.Sxe7#
- 1...Qh6
- 2.Sxe7#
- 1...Rba1
- 2.b5#
- 1...Rc1
- 2.b5#
- 1...Rd1
- 2.b5#
- 1...Re1
- 2.b5#
- 1...Rf1
- 2.b5#
- 1...Rg1
- 2.b5#
- 1...Rxh1
- 2.b5#
- 1...Rb3
- 2.Sa7#
- 1...Rc3
- 2.Sa7#
- 1...Rd3
- 2.Sa7#
- 1...Re3
- 2.Sa7#
- 1...Rf3
- 2.Sa7#
- 1...Rg3
- 2.Sa7#
- 1...Rh3
- 2.Sa7#
- 1...Ra7
- 2.Sxa7#
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...Sf7
- 2.Sxe7#
- 1...exd5
- 2.Bb5#
- 1...exd6
- 2.Rxd6#
- 1...Qxg6
- Tries
- 1.Se1?
- threat
- 2.Bb5#
- 1...Qxh1
- 2.Sxe7#
- 1...Sc7
- 2.Rxc7#
- 1...Rf3
- 2.Sa7#
- 1...Ra5
- 2.Rh5#
- 1...Sb6
- 2.Rc7#
- 1...Rxb4!
- threat
- 1.Se3?
- threat
- 2.Bb5#
- 1...Rxb4
- 2.Rh5#
- 1...Sc7
- 2.Rxc7#
- 1...Sb6
- 2.Rc7#
- 1...Ra5!
- threat
- 1.Rd1?
- threat
- 2.Bb5#
- 1...Rxd1
- 2.b5#
- 1...Sc7
- 2.Rxc7#
- 1...Ra5
- 2.Sh4#
- 1...Rd3
- 2.Sa7#
- 1...Sb6
- 2.Rc7#
- 1...Rxb4!
- threat
- 1.Rd3?
- threat
- 2.Bb5#
- 1...Rxb4
- 2.Sh4#
- 1...Rxd3
- 2.Sa7#
- 1...Sc7
- 2.Rxc7#
- 1...Sb6
- 2.Rc7#
- 1...Ra5!
- threat
- 1.Rh5?
- threat
- 2.Bb5#
- 1...Qxh5
- 2.Sxe7#
- 1...Rxb4
- 2.Se3#
- 1...Sc7
- 2.Rxc7#
- 1...Ra5
- 2.Se1#
- 1...Sb6
- 2.Rc7#
- 1...e5!
- threat
- 1.Qxb1?
- threat
- 2.b5#
- 1...Sc7
- 2.Rxc7#
- 1...Rb3
- 2.Sa7#
- 1...Ra5!
- threat
- 1.Qxh7?
- threat
- 2.Sxe7#
- 1...exd6
- 2.Se7#
- 2.Rxd6#
- 2.Qd7#
- 1...Sc7
- 2.Rxc7#
- 1...Sxg6!
- threat
- 1.gxh7?
- threat
- 2.Sxe7#
- 1...exd6
- 2.Se7#
- 2.Rxd6#
- 1...Sc7
- 2.Rxc7#
- 1...Sg6!
- threat
- 1.Se1?
- Keys
- 1.Sh4!
- threat
- 2.Bb5#
- 1...Rxh1
- 2.b5#
- 1...Rxb4
- 2.Rd3#
- 1...Sc7
- 2.Rxc7#
- 1...Ra5
- 2.Rd1#
- 1...Rf3
- 2.Sa7#
- 1...Sb6
- 2.Rc7#
- threat
- 1.Sh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 22
- Sets
- Q(f);N_GUARD,XP(H)::S(K),XP(e)
- Q(f);N_GUARD,XQ(A)::S(K),XP(e)
- Q(f);N_GUARD,P_PINB(G)::S(K),XP(e)
- Q(f);N_GUARD::S(K),XP(e)
- R(a);N_GUARD::P(C)
- R(a);N_GUARD,XQ(A)::P(C)
- R(b);N_GUARD::S(K)
- R(b);N_GUARD::S(K),XR(b)
- S(g);N_GUARD::R1(I)
- S(g);N_GUARD::R1(I),XS(g)
- S(h);S_CUTQ(f)::S(K),XP(e)
- P(d);SBLOCK,XR(F)::B(D)
- P(e);OGATE,XB(G)::R1(F),XP(e)
- Tries
- Try
- S(B);
- Threat
- B(D)
- Vars
- Q(f);N_GUARD,XQ(A)::S(K),XP(e)
- S(g);N_GUARD::R1(I),XS(g)
- R(b);N_GUARD::S(K)
- R(b);N_GUARD::QAB(A)+R(F)
- S(g);N_GUARD::R1(I)
- Refutation
- R(a);P_PINR(I),XP(C)
- Try
- S(B);
- Threat
- B(D)
- Vars
- R(a);N_GUARD,P_PINR(I),XP(C)::QAB(A)+R(F)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- Refutation
- R(b);
- Try
- R(F);
- Threat
- B(D)
- Vars
- R(a);N_GUARD,XR(F)::P(C)
- S(g);N_GUARD::R1(I),XS(g)
- R(b);N_GUARD::QAB(A)+S(B)
- R(b);N_GUARD::S(K)
- S(g);N_GUARD::R1(I)
- Refutation
- R(a);P_PINR(I),XP(C)
- Try
- R(F);
- Threat
- B(D)
- Vars
- R(a);N_GUARD,P_PINR(I),XP(C)::QAB(A)+S(B)
- R(b);N_GUARD,XR(F)::S(K)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- Refutation
- R(b);
- Try
- R(F);
- Threat
- B(D)
- Vars
- Q(f);N_GUARD,XR(F)::S(K),XP(e)
- R(a);N_GUARD,P_PINR(I),XP(C)::QAB(A)+S(B)
- S(g);N_GUARD::R1(I),XS(g)
- R(b);N_GUARD::QAB(A)+S(B)
- S(g);N_GUARD::R1(I)
- Refutation
- P(d);
- Try
- Q(A);XR(a)
- Threat
- P(C)
- Vars
- S(g);N_GUARD::R1(I),XS(g)
- R(b);N_GUARD::S(K)
- Refutation
- R(b);
- Try
- Q(A);XQ(f)
- Threat
- S(K),XP(e)
- Vars
- S(g);N_GUARD::R1(I),XS(g)
- Refutation
- S(h);XP(H)
- Try
- P(H);XQ(f)
- Threat
- S(K),XP(e)
- Vars
- S(g);N_GUARD::R1(I),XS(g)
- Refutation
- S(h);
- Try
- Actual
- S(B);
- Threat
- B(D)
- Vars
- R(a);N_GUARD,XQ(A)::P(C)
- R(a);N_GUARD,P_PINR(I),XP(C)::QAB(A)+R(F)
- S(g);N_GUARD::R1(I),XS(g)
- R(b);N_GUARD::QAB(A)+R(F)
- R(b);N_GUARD::S(K)
- S(g);N_GUARD::R1(I)
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