MESON Chess Problem Database

Problem Display
PID: 245196 (3RK1Q1/1p1n4/1p1k4/1P4P1/1p2pP2/1PNpr2b/3PrN2/2R3B1 w - - 0 1)

Segers, Marcel

Schackvarlden, 1932

3RK1Q1/1p1n4/1p1k4/1P4P1/1p2pP2/1PNpr2b/3PrN2/2R3B1

#2

12 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd5#
  • Tries
    • 1.Sfxe4+?
      • 1...Kc7
        • 2.Sd5#
      • 1...Rxe4+!
    • 1.Rxd7+?
      • 1...Kc5
        • 2.Sfxe4#
        • 2.Rd5#
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qf8#
      • 1...Bxd7+!
    • 1.Qf8+?
      • 1...Kc7
        • 2.Sd5#
      • 1...Ke6!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Sfxe4#
      • 1...Ke6
        • 2.Qxd7#
      • 1...Kc7
        • 2.Scxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(h);N_SPINS(j),S_FLIGHT::QAR1(L)
  • Tries
    • Try
      • S(D);CHECK,P_SPINS(D),XP(f)
      • Vars
        • K(h);N_SPINS(j),S_FLIGHT::R(A)+S(F),DCHECK
      • Refutation
        • R(c);CHECK,XS(D)
    • Try
      • R(J);CHECK,XS(j)
      • Refutation
        • B(d);CHECK,XR(J)
    • Try
      • Q(L);CHECK
      • Vars
        • K(h);N_SPINS(j),S_FLIGHT::R(A)+S(F),DCHECK
      • Refutation
        • K(h);N_SPINS(j),P-FLIGHT
  • Actual
    • Q(L);
    • Threat
      • QAB1(L)
    • Vars
      • K(h);N_SPINS(j),S_FLIGHT::S(D),XP(f)
      • K(h);N_SPINS(j),P-FLIGHT::QAB1(L),XS(j)
      • K(h);S_FLIGHT::R(A)+S(F),XP(f)
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