MESON Chess Problem Database
Problem Display
PID: 90522 (8/2p5/2Qn1pP1/3nkN2/6K1/1R2p3/B2P4/2b5 w - - 0 1)
Ahlheim, Karl-Heinz
Die Schwalbe, 1964
#2
7 + 7
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Rxe3#
- 1...Ke6
- 2.Rxe3#
- 1...Se4
- 2.d4#
- 1...Ke4
- Tries
- 1.Ra3?
- threat
- 2.Qxd5#
- 1...Ke4
- 2.Rxe3#
- 2.Qxd5#
- 1...Ke6
- 2.Rxe3#
- 1...Sc3
- 2.d4#
- 1...Sb4
- 2.d4#
- 1...Sf4
- 2.d4#
- 1...Sb6
- 2.d4#
- 1...Se7
- 2.d4#
- 1...Sc4!
- threat
- 1.Rc3?
- threat
- 2.Qxd5#
- 1...Ke4
- 2.Rxe3#
- 2.Qxd5#
- 1...Ke6
- 2.Rxe3#
- 1...Sxc3
- 2.d4#
- 1...Sb4
- 2.d4#
- 1...Sf4
- 2.d4#
- 1...Sb6
- 2.d4#
- 1...Se7
- 2.d4#
- 1...Sc4!
- threat
- 1.Rxe3+?
- 1...Se4
- 2.Qxd5#
- 2.d4#
- 1...Sxe3+!
- 1...Se4
- 1.Rb4?
- threat
- 2.Qxd5#
- 1...Ke6
- 2.Re4#
- 1...Sxb4
- 2.d4#
- 1...Sc3
- 2.Qxc3#
- 2.d4#
- 1...Sf4
- 2.Qc3#
- 2.d4#
- 1...Sb6
- 2.Qc3#
- 2.d4#
- 1...Se7
- 2.Qc3#
- 2.d4#
- 1...Sc4!
- threat
- 1.Rb5?
- threat
- 2.Qxd5#
- 1...Ke4
- 2.Qxd5#
- 1...Ke6!
- threat
- 1.Rb8?
- threat
- 2.Qxd5#
- 1...Ke4
- 2.Qxd5#
- 1...Ke6
- 2.Re8#
- 1...Sc3
- 2.d4#
- 1...Sb4
- 2.d4#
- 1...Sf4
- 2.d4#
- 1...Sb6
- 2.d4#
- 1...Se7
- 2.d4#
- 1...Sc4!
- threat
- 1.Qxd6+?
- 1...Ke4
- 2.Bb1#
- 2.Qe6#
- 2.d3#
- 1...cxd6!
- 1...Ke4
- 1.d4+?
- 1...Ke4
- 2.Bb1#
- 2.Qc2#
- 1...Ke6!
- 1...Ke4
- 1.Ra3?
- Keys
- 1.Rb6!
- threat
- 2.Qxd5#
- 1...Ke4
- 2.Qxd5#
- 1...Ke6
- 2.Qe8#
- 1...Sxb6
- 2.d4#
- 1...Sc4
- 2.Qe6#
- 1...Sc3
- 2.d4#
- 1...Sb4
- 2.d4#
- 1...Sf4
- 2.d4#
- 1...Se7
- 2.d4#
- threat
- 1.Rb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- K(d);P-FLIGHT,P_SPINS(c)::R1(C),XP(b)
- K(d);P-FLIGHT,P_SPINS(e)::R(C),XP(b)
- S(e);SBLOCK::P(B)
- Tries
- Try
- R(C);
- Threat
- QAR1(F),XS(c)
- Vars
- K(d);P-FLIGHT,P_SPINS(c)::R(C),XP(b)
- S(c);::P(B)
- Refutation
- S(e);
- Try
- R(C);
- Threat
- QAR1(F),XS(c)
- Vars
- K(d);P-FLIGHT,P_SPINS(c)::R(C),XP(b)
- S(c);XR(C)::P(B)
- S(c);::P(B)
- Refutation
- S(e);
- Try
- R(C);CHECK,XP(b)
- Refutation
- S(c);CHECK,XR(C)
- Try
- R(C);
- Threat
- QAR1(F),XS(c)
- Vars
- K(d);P-FLIGHT,P_SPINS(c)::R(C)
- S(c);XR(C)::P(B)
- Refutation
- S(e);
- Try
- R(C);P_PINS(c)
- Threat
- QAR1(F),XS(c)
- Vars
- K(d);P-FLIGHT::QAB1(F),XS(c)
- Refutation
- K(d);P-FLIGHT
- Try
- R(C);
- Threat
- QAR1(F),XS(c)
- Vars
- K(d);P-FLIGHT,P_SPINS(c)::QAB1(F),XS(c)
- K(d);P-FLIGHT,P_SPINS(c)::R(C)
- S(c);::P(B)
- Refutation
- S(e);
- Try
- Q(F);CHECK,XS(e)
- Refutation
- P(g);XQ(F)
- Try
- P(B);CHECK
- Refutation
- K(d);P-FLIGHT,P_SPINS(e)
- Try
- Actual
- R(C);
- Threat
- QAR1(F),XS(c)
- Vars
- K(d);P-FLIGHT,P_SPINS(c)::QAB1(F),XS(c)
- K(d);P-FLIGHT,P_SPINS(c)::QAR2(F)
- S(c);XR(C)::P(B)
- S(e);OGATE::QAR1(F)
- S(c);::P(B)
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