MESON Chess Problem Database
Problem Display
PID: 268703 (Q6B/1R1N4/4p3/5p2/KpBqkp2/P4n2/2N3P1/6b1 w - - 0 1)
Burbach, Johannes Jacob
Probleemblad, 1986
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qb2
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qf2
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qc3
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qe3
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qb6
- 2.Rxb6#
- 1...Qf6
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qa7+
- 2.Rxa7#
- 1...Qg7
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Qxh8
- 2.Rb8#
- 1...Qxd7+
- 2.Rxd7#
- 1...Se5
- 2.Sf6#
- 1...e5
- 2.Sf6#
- 1...Qa1
- Tries
- 1.Sf6+?
- 1...Qxf6
- 2.Rb5#
- 1...Ke5!
- 1...Qxf6
- 1.Bf1?
- threat
- 2.Rxb4#
- 1...Qa7+
- 2.Rxa7#
- 1...Qxd7+
- 2.Rxd7#
- 1...bxa3+
- 2.Rb4#
- 1...b3+
- 2.Rb4#
- 1...Kd5
- 2.Rb6#
- 1...Qb6
- 2.Rxb6#
- 1...Se5
- 2.Sf6#
- 1...Qd5!
- threat
- 1.Bd3+?
- 1...Kd5
- 2.Rb6#
- 1...Qxd3
- 2.Rxb4#
- 1...Kxd3!
- 1...Kd5
- 1.Bxd4?
- threat
- 2.Sc5#
- 2.Sf6#
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Bxd4
- 2.Rxb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...bxa3
- 2.Sc5#
- 2.Sf6#
- 2.Rb1#
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Se5
- 2.Sc5#
- 2.Sf6#
- 1...b3
- 2.Sc5#
- 2.Sf6#
- 2.Rxb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rb8#
- 1...Sxd4!
- threat
- 1.Sf6+?
- Keys
- 1.Be2!
- threat
- 2.Rxb4#
- 1...Qa7+
- 2.Rxa7#
- 1...Qxd7+
- 2.Rxd7#
- 1...bxa3+
- 2.Rb4#
- 1...b3+
- 2.Rb4#
- 1...Kd5
- 2.Rb6#
- 1...Qb6
- 2.Rxb6#
- 1...Qd5
- 2.gxf3#
- 1...Se5
- 2.Sf6#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(d);N_GUARD::QAB(H)+R(F),XQ(d)
- Q(d);CHECK,N_GUARD::QAB(H)+R(F),XQ(d)
- Q(d);N_GUARD,XB(I)::QAB(H)+R(F)
- Q(d);CHECK,OGATE,XS(G)::QAB(H)+R(F),XQ(d)
- S(b);SBLOCK,S_CUTQ(d)::S(G)
- P(h);SBLOCK,S_CUTQ(d)::S(G)
- Tries
- Try
- S(G);CHECK
- Vars
- Q(d);XS(G)::QAB(H)+R(F)
- Refutation
- K(e);P-FLIGHT
- Try
- B(E);
- Threat
- QAB(H)+R(F),XP(c)
- Vars
- Q(d);CHECK,N_GUARD::QAB(H)+R(F),XQ(d)
- Q(d);CHECK,OGATE,XS(G)::QAB(H)+R(F),XQ(d)
- P(c);CHECK,XP(C)::QAB(H)+R(F)
- P(c);CHECK::QAB(H)+R(F)
- K(e);S_CUTQ(d),S_FLIGHT::QAB(H)+R(F)
- Q(d);N_GUARD::QAB(H)+R(F),XQ(d)
- S(b);SBLOCK,S_CUTQ(d)::S(G)
- Refutation
- Q(d);
- Try
- B(E);CHECK
- Vars
- K(e);N_GUARD,S_FLIGHT::QAB(H)+R(F)
- Q(d);SBLOCK,XB(E)::QAB(H)+R(F),DCHECK,XP(c)
- Refutation
- K(e);S_FLIGHT,XB(E)
- Try
- B(I);XQ(d)
- Threat
- DUALS(8)
- Refutation
- S(b);XB(I)
- Try
- Actual
- B(E);
- Threat
- QAB(H)+R(F),XP(c)
- Vars
- Q(d);CHECK,N_GUARD::QAB(H)+R(F),XQ(d)
- Q(d);CHECK,OGATE,XS(G)::QAB(H)+R(F),XQ(d)
- P(c);CHECK,XP(C)::QAB(H)+R(F)
- P(c);CHECK::QAB(H)+R(F)
- K(e);S_CUTQ(d),S_FLIGHT::QAB(H)+R(F)
- Q(d);N_GUARD::QAB(H)+R(F),XQ(d)
- Q(d);SBLOCK::P(B),XS(b)
- S(b);SBLOCK,S_CUTQ(d)::S(G)
Developed and maintained by Brian Stephenson.
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