MESON Chess Problem Database
Problem Display
PID: 15403 (2r2r2/3Rb3/b3Q2P/1pp1PR2/7B/4k3/2PNN3/K1n2B1n w - - 0 1)
Keller, Michael
Comm., Sachsische Zeitung, 1983
#2
11 + 9
| 4655 | Michael Keller Ein Meister der Schachkomposition | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Bg5#
- 2.exf6#
- 1...Rd8
- 2.Rf3#
- 1...Re8
- 2.Rf3#
- 1...Rg8
- 2.Rf3#
- 1...Rh8
- 2.Rf3#
- 1...Bg5
- 2.Bxg5#
- 1...Bd6
- 2.Bg5#
- 1...Bf6
- 2.Rf3#
- 2.exf6#
- 1...Sa2
- 2.Rd3#
- 1...Sxe2
- 2.Rd3#
- 1...Sb3+
- 2.Qxb3#
- 1...Sd3
- 2.Rxd3#
- 1...Sf2
- 2.Bxf2#
- 1...Rf6
- Tries
- 1.Sc4+?
- 1...Ke4
- 2.Sc3#
- 2.Bg2#
- 1...bxc4!
- 1...Ke4
- 1.Bf6?
- threat
- 2.Rf3#
- 1...Sb3+
- 2.Qxb3#
- 1...Rxf6
- 2.exf6#
- 1...Bd6
- 2.Bg5#
- 1...Sd3
- 2.Rxd3#
- 1...Bb7!
- threat
- 1.Bxe7?
- threat
- 2.Bg5#
- 1...Sb3+
- 2.Qxb3#
- 1...Sxe2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Rf6
- 2.exf6#
- 1...Rg8
- 2.Rf3#
- 1...Rxf5!
- threat
- 1.Qb3+?
- 1...Sd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Sxb3+!
- 1...Sd3
- 1.Qc4?
- threat
- 2.Qe4#
- 2.Qf4#
- 1...Sb3+
- 2.Qxb3#
- 1...Rxf5
- 2.Qe4#
- 1...Sxe2
- 2.Rd3#
- 2.Qxe2#
- 2.Qd3#
- 2.Qe4#
- 1...Bd6
- 2.Bg5#
- 2.Qf4#
- 1...Sd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Bb7
- 2.Qf4#
- 1...Bg5
- 2.Bxg5#
- 2.Qe4#
- 1...Sf2
- 2.Bxf2#
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...bxc4!
- threat
- 1.Qd5?
- threat
- 2.Qf3#
- 2.Qe4#
- 1...Sb3+
- 2.Qxb3#
- 1...Rxf5
- 2.Qe4#
- 1...Sd3
- 2.Qxd3#
- 1...Bd6
- 2.Bg5#
- 1...Sf2
- 2.Bxf2#
- 2.Qf3#
- 1...Sg3
- 2.Qf3#
- 1...Bb7!
- threat
- 1.Qf6?
- threat
- 2.Bg5#
- 2.Rf3#
- 1...Rxf6
- 2.Bg5#
- 1...Bxf6
- 2.Rf3#
- 1...Sxe2
- 2.Rf3#
- 2.Rd3#
- 1...Bd6
- 2.Bg5#
- 2.Qg5#
- 1...Sd3
- 2.Rxd3#
- 1...Bb7
- 2.Bg5#
- 1...Rg8
- 2.Rf3#
- 1...Sb3+!
- threat
- 1.Sc4+?
- Keys
- 1.Rf6!
- threat
- 2.Bg5#
- 1...Sb3+
- 2.Qxb3#
- 1...Rxf6
- 2.exf6#
- 1...Bxf6
- 2.exf6#
- 1...Sxe2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Rg8
- 2.Rf3#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(i);N_GUARD::R1(H)
- B(g);N_GUARD::B(F),XB(g)
- B(g);N_GUARD::B(F)
- S(a);N_GUARD::R1(K)
- S(a);N_GUARD,XS(E)::R1(K)
- S(a);CHECK,N_GUARD::QAR(I),XS(a)
- S(a);N_GUARD::R1(K),XS(a)
- S(b);N_GUARD::B(F),XS(b)
- Tries
- Try
- S(D);CHECK
- Refutation
- P(d);XS(D)
- Try
- B(F);
- Threat
- R1(H)
- Vars
- S(a);CHECK,N_GUARD::QAR(I),XS(a)
- R(i);OGATE,XB(F)::QAR(I)+P(G),XR(i)
- B(g);N_GUARD::B(F)
- S(a);N_GUARD::R1(K),XS(a)
- Refutation
- B(f);
- Try
- B(F);XB(g)
- Threat
- B(F)
- Vars
- S(a);CHECK,N_GUARD::QAR(I),XS(a)
- S(a);N_GUARD,XS(E)::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- R(i);OGATE::QAR(I)+P(G),XR(i)
- R(i);N_GUARD::R1(H)
- Refutation
- R(i);XR(H)
- Try
- Q(I);CHECK
- Refutation
- S(a);CHECK,XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR(I),XS(a)
- R(i);XR(H)::QAR1(I)
- B(f);::QAB1(I)
- S(b);::QAB1(I)
- Refutation
- P(d);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAR(I),XS(a)
- R(i);XR(H)::QAR1(I)
- S(a);N_GUARD::QAR1(I),XS(a)
- B(g);N_GUARD::B(F)
- S(b);::QAR1(I)
- Refutation
- B(f);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(i);XQ(I)::B(F)
- B(g);P_PINP(G),XQ(I)::R1(H)
- S(a);N_GUARD::R1(K),XS(a)
- B(f);::B(F)
- R(i);::R1(H)
- Refutation
- S(a);CHECK
- Try
- Actual
- R(H);
- Threat
- B(F)
- Vars
- S(a);CHECK,N_GUARD::QAR(I),XS(a)
- R(i);OGATE,XR(H)::QAR(I)+P(G),XR(i)
- B(g);OGATE,P_PINP(G),XR(H)::QAR(I)+P(G),XB(g)
- S(a);N_GUARD,XS(E)::R1(K)
- S(a);N_GUARD::R1(K),XS(a)
- R(i);N_GUARD::R1(H)
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