MESON Chess Problem Database
Problem Display
PID: 11849 (q3r3/8/8/1pQ5/4k3/1pp2R2/2P3nB/3B3K w - - 0 1)
Keller, Michael
Schach-Echo, 1972
#2
6 + 7
| 4655 | Michael Keller Ein Meister der Schachkomposition | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Qxe5#
- 1...Rb8
- 2.Qe5#
- 1...Rc8
- 2.Qe5#
- 1...Rd8
- 2.Qe5#
- 1...Rf8
- 2.Qe5#
- 1...Rg8
- 2.Qe5#
- 1...Rh8
- 2.Qe5#
- 1...Se1
- 2.Re3#
- 2.Rf4#
- 1...Se3
- 2.Rxe3#
- 2.Rf4#
- 1...Sf4
- 2.Re3#
- 2.Rxf4#
- 1...Sh4
- 2.Re3#
- 2.Rf4#
- 1...b4
- 2.Qc4#
- 1...Re5
- Tries
- 1.Kxg2?
- threat
- 2.Re3#
- 2.Rf4#
- 1...bxc2
- 2.Bxc2#
- 2.Re3#
- 1...Qd5
- 2.Qe3#
- 1...Qb8
- 2.Re3#
- 1...Re5
- 2.Rf4#
- 2.Qxe5#
- 1...Rf8
- 2.Re3#
- 2.Qe5#
- 1...Rg8+!
- threat
- 1.Rf1?
- threat
- 2.Bf3#
- 1...bxc2
- 2.Bxc2#
- 1...Re5
- 2.Qxe5#
- 1...Rf8
- 2.Qe5#
- 1...Se1
- 2.Rxe1#
- 2.Rf4#
- 1...Sh4
- 2.Re1#
- 2.Rf4#
- 1...Qd5!
- threat
- 1.Rd3?
- threat
- 2.Bf3#
- 1...Qd5
- 2.Qxd5#
- 1...Re5
- 2.Qxe5#
- 1...Qa1
- 2.Qd5#
- 1...Rf8
- 2.Qe5#
- 1...Se1
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 2.Rd4#
- 1...Sh4
- 2.Re3#
- 1...bxc2!
- threat
- 1.Rf6?
- threat
- 2.Bf3#
- 1...bxc2
- 2.Bxc2#
- 1...Se1
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...Qa1!
- threat
- 1.Rf7?
- threat
- 2.Bf3#
- 1...bxc2
- 2.Bxc2#
- 1...Se1
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...Qa1!
- threat
- 1.Qc6+?
- 1...Kd4
- 2.Rd3#
- 1...Qxc6!
- 1...Kd4
- 1.Kxg2?
- Keys
- 1.Rf8!
- threat
- 2.Bf3#
- 1...Rxf8
- 2.Qe5#
- 1...bxc2
- 2.Bxc2#
- 1...Qa1
- 2.Rxe8#
- 1...Se1
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- threat
- 1.Rf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- R(g);N_GUARD::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- R(g);N_GUARD,P_PINB(D)::QAR1(F)
- P(e);N_GUARD::QAR2(F)
- Tries
- Try
- K(B);S_FLIGHT,XS(a)
- Threat
- DUALS(2)
- Vars
- Q(f);SBLOCK::QAR1(F)
- Q(f);::R1(E)
- Refutation
- R(g);CHECK
- Try
- R(E);
- Threat
- B(A)
- Vars
- P(b);OGATE,XP(C)::B(A),XP(b)
- R(g);N_GUARD::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- Refutation
- Q(f);
- Try
- R(E);
- Threat
- B(A)
- Vars
- Q(f);N_GUARD::QAB1(F),XQ(f)
- R(g);N_GUARD::QAR1(F),XR(g)
- Q(f);N_GUARD,P_PINB(A)::QAB1(F)
- R(g);N_GUARD::QAR1(F)
- S(a);N_GUARD::R1(E)
- Refutation
- P(b);XP(C)
- Try
- R(E);
- Threat
- B(A)
- Vars
- P(b);OGATE,XP(C)::B(A),XP(b)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- Refutation
- Q(f);P_PINB(A)
- Try
- R(E);
- Threat
- B(A)
- Vars
- P(b);OGATE,XP(C)::B(A),XP(b)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- Refutation
- Q(f);P_PINB(A)
- Try
- Q(F);CHECK
- Vars
- K(d);P-FLIGHT::R1(E)
- Refutation
- Q(f);XQ(F)
- Try
- Actual
- R(E);
- Threat
- B(A)
- Vars
- R(g);N_GUARD,XR(E)::QAR1(F)
- P(b);OGATE,XP(C)::B(A),XP(b)
- Q(f);N_GUARD,P_PINB(A)::R(E),XR(g)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
Developed and maintained by Brian Stephenson.
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