MESON Chess Problem Database
Problem Display
PID: 184163 (8/1N3p2/n4B2/P1pk4/2R3Q1/6pB/8/1K5b w - - 0 1)
Meurs, Abraham
The Observer, 1927
(First published on Sun Sep 25 1927)
#2
7 + 6
| 15239 | Valois Notebooks | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Kc6
- 2.Qd7#
- 1...Bg2
- 2.Bxg2#
- 1...Be4+
- 2.Qxe4#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qe4#
- 1...Kc6
- Tries
- 1.Ka1?
- 1...Kc6
- 2.Qd7#
- 1...Be4
- 2.Qxe4#
- 1...Bg2
- 2.Bxg2#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qe4#
- 1...Bf3!
- 1...Kc6
- 1.Kc1?
- 1...Kc6
- 2.Qd7#
- 1...Be4
- 2.Qxe4#
- 1...Bg2
- 2.Bxg2#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qe4#
- 1...Bf3!
- 1...Kc6
- 1.Kb2?
- 1...Kc6
- 2.Qd7#
- 1...Be4
- 2.Qxe4#
- 1...Bg2
- 2.Bxg2#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qe4#
- 1...Bf3!
- 1...Kc6
- 1.Bf1?
- threat
- 2.Qd7#
- 1...Be4+
- 2.Qxe4#
- 1...Sb8
- 2.Rxc5#
- 1...Kc6!
- threat
- 1.Rc1?
- 1...Kc6
- 2.Qd7#
- 1...Bf3
- 2.Qxf3#
- 1...Bg2
- 2.Bxg2#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qf3#
- 1...c4
- 2.Qxc4#
- 1...Be4+!
- 1...Kc6
- 1.Rc3?
- 1...Kc6
- 2.Qd7#
- 1...Bf3
- 2.Qxf3#
- 1...Bg2
- 2.Bxg2#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qf3#
- 1...c4
- 2.Qxc4#
- 1...Be4+!
- 1...Kc6
- 1.Rd4+?
- 1...Kc6
- 2.Qd7#
- 1...cxd4!
- 1...Kc6
- 1.Qd1+?
- 1...Kc6
- 2.Qd7#
- 1...Kxc4!
- 1...Kc6
- 1.Qf5+?
- 1...Kc6
- 2.Qd7#
- 1...Kxc4!
- 1...Kc6
- 1.Qd4+?
- 1...Kc6
- 2.Qd7#
- 1...cxd4!
- 1...Kc6
- 1.Ka1?
- Keys
- 1.Rc2!
- 1...Kc6
- 2.Qd7#
- 1...Bf3
- 2.Qxf3#
- 1...Bg2
- 2.Bxg2#
- 1...Be4
- 2.Qd7#
- 1...Sb4
- 2.Rxc5#
- 1...Sc7
- 2.Rxc5#
- 1...Sb8
- 2.Rxc5#
- 1...g2
- 2.Qf3#
- 1...c4
- 2.Qxc4#
- 1...Kc6
- 1.Rc2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::B(B),XB(a)
- B(a);CHECK,N_GUARD::QAB1(D),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB1(D)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- B(a);N_GUARD::B(B),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB1(D)
- Refutation
- B(a);
- Try
- K(A);P-FLIGHT
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- B(a);N_GUARD::B(B),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB1(D)
- Refutation
- B(a);
- Try
- K(A);P-FLIGHT
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- B(a);N_GUARD::B(B),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB1(D)
- Refutation
- B(a);
- Try
- B(B);
- Threat
- QAR2(D)
- Vars
- B(a);CHECK,N_GUARD::QAB1(D),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- Refutation
- K(d);P_SPINP(c),S_FLIGHT
- Try
- R(C);
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::QAB(D),XB(a)
- B(a);N_GUARD::B(B),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB(D)
- P(c);::QAB1(D),XP(c)
- Refutation
- B(a);CHECK
- Try
- R(C);
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::QAB(D),XB(a)
- B(a);N_GUARD::B(B),XB(a)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB(D)
- P(c);::QAB1(D),XP(c)
- Refutation
- B(a);CHECK
- Try
- R(C);CHECK
- Vars
- K(d);S_FLIGHT::QAB1(D)
- Refutation
- P(c);XR(C)
- Try
- Q(D);CHECK
- Vars
- K(d);OGATE,P_SPINP(c),S_FLIGHT::QAB1(D)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- Q(D);CHECK
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- Q(D);CHECK
- Vars
- K(d);OGATE,P_SPINP(c),S_FLIGHT::QAB1(D)
- Refutation
- P(c);XQ(D)
- Try
- Actual
- R(C);
- Vars
- K(d);P_SPINP(c),S_FLIGHT::QAB1(D)
- B(a);N_GUARD::QAB(D),XB(a)
- B(a);N_GUARD::B(B),XB(a)
- B(a);P_PINR(C),SBLOCK::QAR2(D)
- S(e);N_GUARD::R1(C),XP(c)
- P(b);S_CUTB(a)::QAB(D)
- P(c);::QAB1(D),XP(c)
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