MESON Chess Problem Database
Problem Display
PID: 287521 (rR2nK2/P2k4/2pprP2/B2p4/2NQN3/7B/8/6R1 w - - 0 1)
Fomichev, Evgeny Vasilevich
Slesarenko, Anatoly Vasilevich
Mat, 1987
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxa7
- 2.Rd8#
- 1...Sxf6
- 2.Sxf6#
- 2.Rg7#
- 1...Sc7
- 2.Sb6#
- 2.Rg7#
- 1...Sg7
- 2.Rxg7#
- 1...dxc4
- 2.Sc5#
- 1...dxe4
- 2.Se5#
- 1...Rxa7
- Tries
- 1.Sexd6?
- 1...Rxa7
- 2.Rd8#
- 1...Rxb8
- 2.axb8S#
- 1...Sxd6
- 2.Se5#
- 1...Sxf6
- 2.Rg7#
- 1...dxc4
- 2.Sxe8#
- 1...Sg7
- 2.Rxg7#
- 1...Sc7
- 2.Rg7#
- 1...c5!
- 1...Rxa7
- 1.Rxa8?
- threat
- 2.Rd8#
- 1...Sc7
- 2.Sb6#
- 2.Rg7#
- 1...c5!
- threat
- 1.Qe5?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 1...dxe5
- 2.Sxe5#
- 2.Sc5#
- 1...Sg7
- 2.Rxg7#
- 2.Qxd6#
- 1...Sc7
- 2.Sb6#
- 2.Rg7#
- 2.Qxd6#
- 1...c5!
- threat
- 1.Qb6?
- threat
- 2.Qd8#
- 1...Sc7
- 2.Rg7#
- 2.Qxc7#
- 1...c5
- 2.Qb5#
- 1...Rxb8!
- threat
- 1.Qxd5?
- threat
- 2.Se5#
- 2.Sc5#
- 2.Bxe6#
- 2.Qxe6#
- 1...Rxb8
- 2.Bxe6#
- 2.Qxe6#
- 1...Sg7
- 2.Se5#
- 2.Sc5#
- 2.Rxg7#
- 2.Qxd6#
- 1...Sc7
- 2.Se5#
- 2.Sb6#
- 2.Sc5#
- 2.Rg7#
- 2.Qxd6#
- 1...c5
- 2.Se5#
- 2.Sxc5#
- 2.Bxe6#
- 1...cxd5!
- threat
- 1.f7?
- threat
- 2.fxe8Q#
- 2.fxe8B#
- 1...Rxa7
- 2.Rd8#
- 2.fxe8Q#
- 2.fxe8B#
- 1...dxc4
- 2.Sc5#
- 2.fxe8Q#
- 2.fxe8B#
- 1...dxe4
- 2.Se5#
- 2.fxe8Q#
- 2.fxe8B#
- 1...c5
- 2.fxe8Q#
- 2.fxe8B#
- 1...Sg7
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sb6#
- 2.Sf6#
- 1...Rxb8!
- threat
- 1.Sexd6?
- Keys
- 1.Scxd6!
- 1...Rxa7
- 2.Rd8#
- 1...Rxb8
- 2.axb8S#
- 1...Sxd6
- 2.Sc5#
- 1...Sxf6
- 2.Rg7#
- 1...dxe4
- 2.Sxe8#
- 1...c5
- 2.Qa4#
- 1...Sc7
- 2.Rg7#
- 1...Sg7
- 2.Rxg7#
- 1...Rxa7
- 1.Scxd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(f);N_GUARD,XP(H)::R1(I)
- S(g);N_GUARD,P_PINR(I)::R(A),XS(g)
- P(a);P_SPINP(c),XS(C)::S(E)
- P(a);P_SPINP(c),XS(E)::S(C)
- Tries
- Try
- S(E);XP(c)
- Vars
- R(f);N_GUARD,XP(H)::R1(I)
- R(f);OGATE,XR(I)::PXR(f)=S
- S(g);P_PINR(I),SBLOCK,XS(E)::S(C)
- S(g);N_GUARD,P_PINR(I),XP(G)::R(A)
- P(a);XS(C)::QAR(D)+S(E),XS(g)
- S(g);N_GUARD,P_PINR(I)::R(A),XS(g)
- S(g);N_GUARD,P_PINR(I)::R(A)
- Refutation
- P(b);
- Try
- R(I);XR(f)
- Threat
- R1(I)
- Refutation
- P(b);
- Try
- Q(D);
- Threat
- DUALS(2)
- Refutation
- P(b);
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- P(b);OGATEB::QAB(D)
- Refutation
- R(f);XR(I)
- Try
- Q(D);P_PINP(c),XP(a)
- Threat
- DUALS(4)
- Refutation
- P(b);N_SPINP(c),XQ(D)
- Try
- P(G);
- Threat
- PXS(g)=Q
- Vars
- P(b);::PXS(g)=Q
- S(g);N_GUARD,P_PINR(I)::S(E)
- S(g);N_GUARD,P_PINR(I)::S(E),XS(g)
- Refutation
- R(f);XR(I)
- Try
- Actual
- S(C);XP(c)
- Vars
- R(f);N_GUARD,XP(H)::R1(I)
- R(f);OGATE,XR(I)::PXR(f)=S
- S(g);P_PINR(I),SBLOCK,XS(C)::S(E)
- S(g);N_GUARD,P_PINR(I),XP(G)::R(A)
- P(a);XS(E)::QAR(D)+S(C),XS(g)
- P(b);OGATEB::QAB(D)
- S(g);N_GUARD,P_PINR(I)::R(A)
- S(g);N_GUARD,P_PINR(I)::R(A),XS(g)
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