MESON Chess Problem Database
Problem Display
PID: 228961 (1Q1K4/2pR4/p4p2/2p5/1pk1NR2/n1N1r3/Pn4Pb/4Br2 w - - 0 1)
Malpas, Louis
Mari, Alberto
L'Echiquier, 1926
#2
9 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Sd2#
- 1...Rd3
- 2.Sd6#
- 1...Rg3
- 2.Sf2#
- 1...Rxe4
- 2.Rxe4#
- 1...Sd3
- 2.Sd6#
- 1...bxc3
- 2.Sd2#
- 2.Qb3#
- 1...b3
- 2.Qxb3#
- 2.axb3#
- 1...Rxc3
- Tries
- 1.Sb1?
- threat
- 2.Sbd2#
- 2.Sed2#
- 1...Rxe4
- 2.Rxe4#
- 1...Rf2
- 2.Sed2#
- 1...Re2
- 2.Sed2#
- 1...Rd3
- 2.Sed2#
- 1...Sxb1!
- threat
- 1.Sd1?
- threat
- 2.Sxb2#
- 2.Sxe3#
- 2.Sd2#
- 1...Rfxe1
- 2.Sxb2#
- 2.Sd2#
- 1...Rexe1
- 2.Sxb2#
- 2.Sd2#
- 1...Rxe4
- 2.Sxb2#
- 2.Se3#
- 2.Rxe4#
- 1...Bxf4
- 2.Sxb2#
- 2.Sd2#
- 1...Rf2
- 2.Sxe3#
- 2.Sd2#
- 1...Rff3
- 2.Sxb2#
- 2.Sd2#
- 1...Re2
- 2.Sd2#
- 1...Rb3
- 2.Sd2#
- 1...Rc3
- 2.Sxb2#
- 2.Sd2#
- 1...Rd3
- 2.Sxb2#
- 2.Sd2#
- 1...Ref3
- 2.Sxb2#
- 2.Sd2#
- 1...Rg3
- 2.Sxb2#
- 2.Sd2#
- 2.Sef2#
- 1...Rh3
- 2.Sxb2#
- 2.Sd2#
- 1...Bg1
- 2.Sxb2#
- 2.Sd2#
- 1...Sd3
- 2.Sxe3#
- 2.Sd2#
- 1...Sa4
- 2.Sxe3#
- 2.Sd2#
- 1...Sc2
- 2.Sxb2#
- 2.Sd2#
- 1...Sxd1!
- threat
- 1.Se2?
- threat
- 2.Sd2#
- 1...Rxe4
- 2.Rxe4#
- 1...Rxe2!
- threat
- 1.Sa4?
- threat
- 2.Sxb2#
- 2.Sd2#
- 1...Rxe4
- 2.Sxb2#
- 2.Rxe4#
- 1...Rf2
- 2.Sd2#
- 1...Re2
- 2.Sd2#
- 1...Rb3
- 2.Sd2#
- 1...Sd1
- 2.Sd2#
- 1...Sd3
- 2.Sd2#
- 1...Sxa4!
- threat
- 1.Sf2+?
- 1...Re4
- 2.Rxe4#
- 1...Bxf4!
- 1...Re4
- 1.Sg3+?
- 1...Re4
- 2.Rxe4#
- 1...Rxf4!
- 1...Re4
- 1.Qa7?
- threat
- 2.Qxc5#
- 1...Rxe4
- 2.Rxe4#
- 1...Sd3
- 2.Sd6#
- 1...Sa4!
- threat
- 1.Qxc7?
- threat
- 2.Qxc5#
- 1...Rxe4
- 2.Rxe4#
- 1...Sd3
- 2.Sd6#
- 1...Sa4!
- threat
- 1.Qb6?
- threat
- 2.Qxc5#
- 2.Qe6#
- 1...Rxc3
- 2.Sd2#
- 2.Qxc5#
- 1...Rxe4
- 2.Rxe4#
- 2.Qe6#
- 1...bxc3
- 2.Sd2#
- 2.Qxc5#
- 2.Qb3#
- 1...Sa4
- 2.Qe6#
- 1...Rd3
- 2.Sd6#
- 2.Qxc5#
- 1...Sd3
- 2.Sd6#
- 2.Qe6#
- 1...b3
- 2.Qxc5#
- 2.Qxb3#
- 2.axb3#
- 1...c6
- 2.Qxc5#
- 1...cxb6!
- threat
- 1.Qb7?
- threat
- 2.Qd5#
- 1...Rxc3
- 2.Sd2#
- 1...bxc3
- 2.Sd2#
- 2.Qb3#
- 1...Rd3
- 2.Sd6#
- 1...b3
- 2.Qxb3#
- 2.axb3#
- 1...c6!
- threat
- 1.Sb1?
- Keys
- 1.Ke7!
- threat
- 2.Qg8#
- 1...Rxe4+
- 2.Rxe4#
- 1...Rxc3
- 2.Sd2#
- 1...bxc3
- 2.Qb3#
- 1...Rd3
- 2.Sd6#
- 1...Rg3
- 2.Sf2#
- 1...b3
- 2.Qxb3#
- 2.axb3#
- threat
- 1.Ke7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(e);SBLOCK,XS(D)::R(F)+S(E),DCHECK
- R(e);P_PINR(G),SBLOCK::R(F)+S(E),DCHECK
- R(e);N_GUARD,S_CUTB(c)::R(F)+S(E)
- R(e);OGATE,P_SPINR(e),XS(E)::R(F),XR(e)
- S(b);SBLOCK::R(F)+S(E),DCHECK
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(e);OGATE,P_SPINR(e),XS(E)::R(F),XR(e)
- R(a);::R(F)+S(E),DCHECK
- R(e);::R(F)+S(E),DCHECK
- R(e);P_PINR(G)::R(F)+S(E),DCHECK
- Refutation
- S(d);XS(D)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(e);::R(F)+S(E),DCHECK
- Refutation
- S(b);XS(D)
- Try
- S(D);
- Threat
- R(F)+S(E),DCHECK
- Vars
- R(e);OGATE,P_SPINR(e),XS(E)::R(F),XR(e)
- Refutation
- R(e);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);::R(F)+S(E),DCHECK
- R(e);::R(F)+S(E),DCHECK
- S(b);::R(F)+S(E),DCHECK
- Refutation
- S(b);XS(D)
- Try
- S(E);CHECK
- Vars
- R(e);N_GUARD,P_SPINR(e)::R(F),XR(e)
- Refutation
- B(c);XR(F)
- Try
- S(E);CHECK
- Vars
- R(e);N_GUARD,P_SPINR(e)::R(F),XR(e)
- Refutation
- R(a);XR(F)
- Try
- Q(H);
- Threat
- QAR1(H),XP(h)
- Vars
- R(e);OGATE,P_SPINR(e),XS(E)::R(F),XR(e)
- S(b);SBLOCK::R(F)+S(E),DCHECK
- Refutation
- S(b);
- Try
- Q(H);P_PINP(h),XP(k)
- Threat
- QAR1(H),XP(h)
- Vars
- R(e);OGATE,P_SPINR(e),XS(E)::R(F),XR(e)
- S(b);SBLOCK::R(F)+S(E),DCHECK
- Refutation
- S(b);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(b);::QAB(H)
- P(k);::QAR1(H),XP(h)
- Refutation
- P(k);XQ(H)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- R(e);SBLOCK,XS(D)::R(F)+S(E),DCHECK
- R(e);P_PINR(G),SBLOCK::R(F)+S(E),DCHECK
- Refutation
- P(k);
- Try
- Actual
- K(I);P_SPINS(E),S_FLIGHT
- Threat
- QAB(H)
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(E)::R(F),XR(e)
- R(e);N_PINS(E),SBLOCK,XS(D)::R(F)+S(E),DCHECK
- P(f);OGATE,XS(D)::QAB1(H)
- R(e);N_PINS(E),SBLOCK::R(F)+S(E),DCHECK
- R(e);N_PINS(E)::R(F)+S(E)
Developed and maintained by Brian Stephenson.
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