MESON Chess Problem Database
Problem Display
PID: 132142 (4Q3/2b4q/4ppn1/2PkN3/3r1Rnr/BP1R3B/8/1K6 w - - 0 1)
Casa, Alex
Die Schwalbe, 1953
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Bxe5
- 2.Bg2#
- 1...Sf2
- 2.Qxe6#
- 1...Sh2
- 2.Qxe6#
- 1...Se3
- 2.Qxe6#
- 1...S4xe5
- 2.Bxe6#
- 2.Rdxd4#
- 2.Qxe6#
- 1...Sh6
- 2.Qxe6#
- 1...S6xe5
- 2.Rxd4#
- 1...fxe5
- 2.Qa8#
- 1...Bxe5
- Tries
- 1.Sc4?
- threat
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 2.Qa8#
- 1...Rxd3
- 2.Qa8#
- 1...Rxh3
- 2.Rdxd4#
- 2.Rfxd4#
- 2.Qa8#
- 1...Bxf4
- 2.Bg2#
- 1...Sxf4
- 2.Qa8#
- 1...Qd7
- 2.Bg2#
- 1...Qg8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Qh8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Ba5
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Be5
- 2.Sb6#
- 2.Bg2#
- 1...Bb6
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Bd6
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Bb8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Bd8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Sf2
- 2.Bxe6#
- 2.Rdxd4#
- 2.Qxe6#
- 2.Qa8#
- 1...Sh2
- 2.Bxe6#
- 2.Rdxd4#
- 2.Qxe6#
- 2.Qa8#
- 1...Se3
- 2.Bxe6#
- 2.Rdxd4#
- 2.Qxe6#
- 2.Qa8#
- 1...S4e5
- 2.Se3#
- 2.Bxe6#
- 2.Rdxd4#
- 2.Qxe6#
- 1...Sh6
- 2.Bg2#
- 2.Bxe6#
- 2.Rdxd4#
- 2.Qxe6#
- 2.Qa8#
- 1...S6e5
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 2.Qa8#
- 1...Sh8
- 2.Rxd4#
- 2.Qa8#
- 1...e5!
- threat
- 1.Sxg4?
- threat
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 2.Qa8#
- 1...Rxd3
- 2.Qa8#
- 1...Rxh3
- 2.Rdxd4#
- 2.Rfxd4#
- 2.Qa8#
- 1...Bxf4
- 2.Bg2#
- 1...Sxf4
- 2.Qa8#
- 1...Qd7
- 2.Bg2#
- 1...Qg8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Qh8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Ba5
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Be5
- 2.Se3#
- 2.Bg2#
- 1...Bb6
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Bd6
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Bb8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Bd8
- 2.Bg2#
- 2.Rdxd4#
- 2.Rfxd4#
- 1...Se5
- 2.Se3#
- 2.Sxf6#
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 2.Qa8#
- 1...Sh8
- 2.Rxd4#
- 2.Qa8#
- 1...e5
- 2.Se3#
- 2.Sxf6#
- 1...Rxg4!
- threat
- 1.Qd7+?
- 1...Kxe5
- 2.Qxd4#
- 1...Bd6
- 2.Qxd6#
- 1...Qxd7!
- 1...Kxe5
- 1.Sc4?
- Keys
- 1.Qa4!
- threat
- 2.Qxd4#
- 1...Kxe5
- 2.Qxd4#
- 1...Rxd3
- 2.Qe4#
- 1...Bxe5
- 2.Bg2#
- 1...S4xe5
- 2.Rdxd4#
- 1...S6xe5
- 2.Rxd4#
- 1...fxe5
- 2.Qa8#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- B(h);SBLOCK,XS(H)::B(E)
- S(b);::QAB1(I),XP(e)
- S(g);P_PINR(D),SBLOCK,XS(H)::R1(F),XR(a)
- P(f);SBLOCK,XS(H)::QAB(I)
- Tries
- Try
- S(H);
- Threat
- DUALS(4)
- Vars
- R(a);N_SPINR(a),XR(D)::QAB(I)
- B(h);XR(F)::B(E)
- S(g);P_PINR(D),XR(F)::QAB(I)
- Q(i);::B(E)
- S(g);P_PINR(D)::R1(F),XR(a)
- Refutation
- P(e);
- Try
- S(H);XS(b)
- Threat
- DUALS(4)
- Vars
- R(a);N_SPINR(a),XR(D)::QAB(I)
- B(h);XR(F)::B(E)
- S(g);P_PINR(D),XR(F)::QAB(I)
- Q(i);::B(E)
- S(g);P_PINR(D)::R1(F),XR(a)
- Refutation
- R(c);XS(H)
- Try
- Q(I);CHECK
- Vars
- K(d);N_SPINR(a),OGATE,P-FLIGHT,XS(H)::QAB1(I),XR(a)
- B(h);N_GUARD,P_SPINB(h)::QAR1(I),XB(h)
- Refutation
- Q(i);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- QAR1(I),XR(a)
- Vars
- K(d);N_SPINR(a),P-FLIGHT,XS(H)::QAB1(I),XR(a)
- R(a);N_SPINR(a),OGATE,XR(D)::QAB1(I)
- B(h);SBLOCK,XS(H)::B(E)
- S(b);SBLOCK,XS(H)::R1(D),XR(a)
- S(g);P_PINR(D),SBLOCK,XS(H)::R1(F),XR(a)
- P(f);SBLOCK,XS(H)::QAB(I)
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