MESON Chess Problem Database
Problem Display
PID: 7863 (1K6/7B/R1N2b1r/P2k4/n5r1/B2PQ3/8/2R5 w - - 0 1)
Pypa, Volodimir Iosifovich
1st Comm., Phenix 08. TT, 1994
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Sb4#
- 2.Qe4#
- 1...Rg2
- 2.Sb4#
- 2.Qe4#
- 1...Rg3
- 2.Sb4#
- 2.Qe4#
- 1...Rb4+
- 2.Sxb4#
- 1...Rc4
- 2.Bg8#
- 2.dxc4#
- 1...Rd4
- 2.Bg8#
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Bg8#
- 1...Rgh4
- 2.Bg8#
- 1...Rg5
- 2.Sb4#
- 2.Qe4#
- 1...Rgg6
- 2.Sb4#
- 2.Qe4#
- 1...Rg7
- 2.Sb4#
- 2.Qe4#
- 1...Rg8+
- 2.Bxg8#
- 1...Ba1
- 2.Se7#
- 1...Bb2
- 2.Se7#
- 1...Bc3
- 2.Se7#
- 1...Bd4
- 2.Sb4#
- 2.Se7#
- 1...Bh4
- 2.Qe5#
- 1...Be5+
- 2.Qxe5#
- 1...Bg5
- 2.Qe5#
- 1...Be7
- 2.Sxe7#
- 2.Qe5#
- 1...Bg7
- 2.Se7#
- 1...Bd8
- 2.Qe5#
- 1...Bh8
- 2.Se7#
- 1...Rg1
- Tries
- 1.Be4+?
- 1...Rxe4
- 2.Qxe4#
- 1...Ke6!
- 1...Rxe4
- 1.Rc4?
- threat
- 2.Sb4#
- 1...Rg8+
- 2.Bxg8#
- 1...Be5+
- 2.Qxe5#
- 1...Rxc4
- 2.Bg8#
- 1...Re4
- 2.Qxe4#
- 1...Bc3
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 2.Qe5#
- 1...Sb6!
- threat
- 1.Qd4+?
- 1...Ke6
- 2.Sd8#
- 1...Rxd4
- 2.Bg8#
- 1...Bxd4!
- 1...Ke6
- 1.Qf4?
- threat
- 2.Sb4#
- 2.Qd6#
- 1...Rg8+
- 2.Bxg8#
- 1...Be5+
- 2.Qxe5#
- 1...Rxf4
- 2.Bg8#
- 1...Ba1
- 2.Sb4#
- 2.Se7#
- 1...Bb2
- 2.Sb4#
- 2.Se7#
- 1...Bc3
- 2.Se7#
- 1...Bd4
- 2.Sb4#
- 2.Se7#
- 1...Bh4
- 2.Sb4#
- 2.Qe5#
- 2.Qf5#
- 1...Bg5
- 2.Sb4#
- 2.Qe5#
- 2.Qf5#
- 1...Be7
- 2.Sxe7#
- 2.Qe5#
- 2.Qf5#
- 1...Bg7
- 2.Sb4#
- 2.Se7#
- 1...Bd8
- 2.Sb4#
- 2.Qe5#
- 2.Qf5#
- 1...Bh8
- 2.Sb4#
- 2.Se7#
- 1...Sc3
- 2.Qd6#
- 1...Sc5
- 2.Sb4#
- 1...Sb6
- 2.Qd6#
- 1...Ke6!
- threat
- 1.Qf3+?
- 1...Re4
- 2.Bg8#
- 2.Qxe4#
- 1...Ke6!
- 1...Re4
- 1.Be4+?
- Keys
- 1.Re1!
- threat
- 2.Qe6#
- 1...Rb4+
- 2.Sxb4#
- 1...Rg8+
- 2.Bxg8#
- 1...Be5+
- 2.Qxe5#
- 1...Re4
- 2.Qxe4#
- 1...Sc5
- 2.Qxc5#
- 1...Ba1
- 2.Se7#
- 1...Bb2
- 2.Se7#
- 1...Bc3
- 2.Se7#
- 1...Bd4
- 2.Se7#
- 1...Bh4
- 2.Qe5#
- 1...Bg5
- 2.Qe5#
- 1...Be7
- 2.Sxe7#
- 2.Qe5#
- 1...Bg7
- 2.Se7#
- 1...Bd8
- 2.Qe5#
- 1...Bh8
- 2.Se7#
- threat
- 1.Re1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(b);CHECK,N_GUARD::S(G),XR(b)
- R(b);N_GUARD::B(H)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(b);CHECK,N_GUARD::B(H),XR(b)
- B(d);N_GUARD::S(G)
- B(d);N_GUARD::QAR1(D)
- B(d);CHECK,N_GUARD::QAR1(D),XB(d)
- Tries
- Try
- B(H);CHECK
- Vars
- R(b);OGATE,XB(H)::QAB1(D),XR(b)
- Refutation
- K(c);S_FLIGHT
- Try
- R(A);
- Threat
- S(G)
- Vars
- R(b);CHECK,N_GUARD::B(H),XR(b)
- B(d);CHECK,N_GUARD::QAR1(D),XB(d)
- R(b);N_GUARD,XR(A)::B(H)
- R(b);N_GUARD::QAB1(D),XR(b)
- B(d);N_GUARD::S(G)
- Refutation
- S(a);
- Try
- Q(D);CHECK
- Vars
- K(c);S_FLIGHT::R(F)+S(G),DCHECK
- R(b);XQ(D)::B(H)
- Refutation
- B(d);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,N_GUARD::B(H),XR(b)
- B(d);CHECK,N_GUARD::QAR1(D),XB(d)
- R(b);N_GUARD,XQ(D)::B(H)
- B(d);N_GUARD::S(G)
- S(a);::QAR1(D)
- S(a);::S(G)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(D);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- R(A);
- Threat
- QAB1(D)
- Vars
- R(b);CHECK,N_GUARD::S(G),XR(b)
- R(b);CHECK,N_GUARD::B(H),XR(b)
- B(d);CHECK,N_GUARD::QAR1(D),XB(d)
- R(b);N_GUARD::QAB1(D),XR(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- B(d);N_GUARD::S(G)
- B(d);N_GUARD::QAR1(D)
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