MESON Chess Problem Database
Problem Display
PID: 85747 (8/5R2/r5k1/r5B1/6R1/5QNK/8/8 w - - 0 1)
Speckmann, Werner
Berliner Morgenpost, 1977
#2
6 + 3
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Qf5#
- 1...Ra2
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Qf5#
- 1...Ra3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Qf5#
- 1...Ra4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qxf6#
- 1...Ra7
- 2.Qf6#
- 1...Ra8
- 2.Qf6#
- 1...Ra1
- Tries
- 1.Be7+?
- 1...Kh6
- 2.Bf8#
- 1...Rg5!
- 1...Kh6
- 1.Rb4?
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qh5#
- 1...Rxg5!
- threat
- 1.Rc4?
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qh5#
- 1...Rxg5!
- threat
- 1.Rd4?
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qh5#
- 1...Rxg5!
- threat
- 1.Re4?
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qh5#
- 1...Rxg5!
- threat
- 1.Rgf4?
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qh5#
- 1...Rxg5!
- threat
- 1.Rh4?
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qg4#
- 2.Qh5#
- 1...Rxg5!
- threat
- 1.Rb7?
- threat
- 2.Qf7#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qxf6#
- 1...Rxg5!
- threat
- 1.Rc7?
- threat
- 2.Qf7#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qxf6#
- 1...Rxg5!
- threat
- 1.Rd7?
- threat
- 2.Qf7#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qxf6#
- 1...Rxg5!
- threat
- 1.Re7?
- threat
- 2.Qf7#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qxf6#
- 1...Rxg5!
- threat
- 1.Qe4+?
- 1...Rf5
- 2.Qxf5#
- 1...Kxf7!
- 1...Rf5
- 1.Qd5?
- threat
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 1...Re6
- 2.Qxe6#
- 1...Ra4
- 2.Bf4#
- 2.Qf5#
- 1...Rxd5!
- threat
- 1.Qd3+?
- 1...Rf5
- 2.Qxf5#
- 1...Kxf7!
- 1...Rf5
- 1.Be7+?
- Keys
- 1.Ra4!
- threat
- 2.Qh5#
- 1...Kxg5
- 2.Qh5#
- 1...Rxg5
- 2.Rxa6#
- threat
- 1.Ra4!
Anticipated by 108456(1956)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(a);N_GUARD::QAB1(A)
- R(a);N_GUARD::QAB1(A),XR(a)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);N_GUARD::QAR1(A)
- Tries
- Try
- B(E);CHECK
- Vars
- K(c);P-FLIGHT::B(E)
- Refutation
- R(a);P_SPINR(a)
- Try
- R(D);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XB(E)::QAR1(A)
- Refutation
- R(a);XB(E)
- Try
- R(D);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XB(E)::QAR1(A)
- Refutation
- R(a);XB(E)
- Try
- R(D);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XB(E)::QAR1(A)
- Refutation
- R(a);XB(E)
- Try
- R(D);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XB(E)::QAR1(A)
- Refutation
- R(a);XB(E)
- Try
- R(D);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XB(E)::QAR1(A)
- Refutation
- R(a);XB(E)
- Try
- R(D);
- Threat
- QAB1(A)
- Refutation
- R(a);XB(E)
- Try
- R(F);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD::QAB1(A),XR(a)
- R(b);N_GUARD::QAR1(A),XR(b)
- Refutation
- R(a);P_SPINR(a),XB(E)
- Try
- R(F);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD::QAB1(A),XR(a)
- R(b);N_GUARD::QAR1(A),XR(b)
- Refutation
- R(a);P_SPINR(a),XB(E)
- Try
- R(F);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD::QAB1(A),XR(a)
- R(b);N_GUARD::QAR1(A),XR(b)
- Refutation
- R(a);P_SPINR(a),XB(E)
- Try
- R(F);
- Threat
- QAB1(A)
- Vars
- R(a);N_GUARD::QAB1(A),XR(a)
- R(b);N_GUARD::QAR1(A),XR(b)
- Refutation
- R(a);P_SPINR(a),XB(E)
- Try
- Q(A);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- K(c);S_FLIGHT,XR(F)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(b);N_GUARD::QAR2(A),XR(b)
- Refutation
- R(a);XQ(A)
- Try
- Q(A);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- K(c);S_FLIGHT,XR(F)
- Try
- Actual
- R(D);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XB(E)::QAR1(A)
- R(a);OGATE,SBLOCK,XB(E)::R(D),XR(b)
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