MESON Chess Problem Database
Problem Display
PID: 139523 (K5Bb/1n6/R4p2/p3N2R/4kp2/3p1N2/3Pr3/5Q2 w - - 0 1)
Keller, Michael
1st HM., Schweizer Schach-Magazin, 1991
#2
8 + 8
| 56 | The Problemist | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qxd3#
- 2.Qxe1#
- 1...Rf2
- 2.Qxd3#
- 1...Rg2
- 2.Qxd3#
- 1...Rh2
- 2.Qxd3#
- 1...a4
- 2.Rxa4#
- 1...Re1
- Tries
- 1.Sc4?
- threat
- 2.Bd5#
- 2.Re6#
- 1...Rf2
- 2.Bd5#
- 1...Sc5
- 2.Sd6#
- 2.Bd5#
- 1...Sd6
- 2.Sxd6#
- 2.Bd5#
- 1...Sd8
- 2.Sd6#
- 2.Bd5#
- 1...f5!
- threat
- 1.Sg4?
- threat
- 2.Bd5#
- 2.Re6#
- 1...Rf2
- 2.Bd5#
- 1...Sc5
- 2.Bd5#
- 1...Sd6
- 2.Bd5#
- 1...Sd8
- 2.Bd5#
- 1...f5!
- threat
- 1.Sc6?
- threat
- 2.Bd5#
- 1...f5
- 2.Sg5#
- 1...Rxd2!
- threat
- 1.Sg6?
- threat
- 2.Bd5#
- 2.Re6#
- 1...Rxd2
- 2.Re6#
- 1...Rf2
- 2.Bd5#
- 1...Sc5
- 2.Bd5#
- 1...Sd6
- 2.Bd5#
- 1...Sd8
- 2.Bd5#
- 1...f5!
- threat
- 1.Sd7?
- threat
- 2.Bd5#
- 2.Re6#
- 1...Rxd2
- 2.Re6#
- 1...Rf2
- 2.Bd5#
- 1...Sc5
- 2.Sxc5#
- 2.Bd5#
- 1...Sd6
- 2.Sc5#
- 2.Bd5#
- 1...Sd8
- 2.Sc5#
- 2.Bd5#
- 1...f5!
- threat
- 1.Sf7?
- threat
- 2.Re6#
- 1...f5
- 2.S7g5#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Rf2!
- threat
- 1.Qa1?
- threat
- 2.Qd4#
- 2.Qa4#
- 1...Rxd2
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...a4
- 2.Rxa4#
- 2.Qd4#
- 2.Qxa4#
- 1...fxe5!
- threat
- 1.Qc1?
- threat
- 2.Qc4#
- 2.Qc6#
- 1...fxe5
- 2.Qc6#
- 1...Sc5
- 2.Qc4#
- 1...Sd6
- 2.Qc6#
- 1...Sd8
- 2.Qc4#
- 1...Rxd2!
- threat
- 1.Sc4?
- Keys
- 1.Sxd3!
- threat
- 2.Qxe2#
- 1...Kxd3
- 2.Qb1#
- 1...Rxd2
- 2.Re6#
- 1...Re1
- 2.Bd5#
- 2.Re6#
- 1...Rf2
- 2.Bd5#
- 1...Rg2
- 2.Bd5#
- 2.Re6#
- 1...Rh2
- 2.Bd5#
- 2.Re6#
- 1...Re3
- 2.Bd5#
- 2.Re6#
- threat
- 1.Sxd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(a);OGATE::QAB1(A),XP(b)
- P(e);OGATE::R(F),XP(e)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);::B(H)
- Refutation
- P(f);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);::B(H)
- S(g);::B(H)
- Refutation
- P(f);
- Try
- S(D);
- Threat
- B(H)
- Vars
- P(f);N_GUARD,SBLOCK::S(C)
- Refutation
- R(a);XP(B)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);XP(B)::R(F)
- R(a);::B(H)
- S(g);::B(H)
- Refutation
- P(f);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);XP(B)::R(F)
- R(a);::B(H)
- Refutation
- P(f);
- Try
- S(D);
- Threat
- R(F)
- Vars
- P(f);N_GUARD,SBLOCK::S(D)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);XP(B)::QAR1(A)
- S(g);::QAR1(A)
- Refutation
- P(f);XS(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(f);XS(D)::QAB(A)
- S(g);::QAR2(A)
- S(g);::QAB(A)
- Refutation
- R(a);XP(B)
- Try
- Actual
- S(D);XP(b)
- Threat
- QAR2(A),XR(a)
- Vars
- K(c);OGATEB,P_SPINR(a),S_FLIGHT,XS(D)::QAB(A)
- R(a);XP(B)::R(F)
- R(a);::B(H)
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