MESON Chess Problem Database

Problem Display
PID: 53661 (1B3RN1/3N1P1B/Q2Pk3/Rn6/2Kp4/p1p5/4r3/8 w - - 0 1)

Gevers, Raymond

Het Belgisch Schaakbord (L'Echiquier Belge), 1950

1B3RN1/3N1P1B/Q2Pk3/Rn6/2Kp4/p1p5/4r3/8

#2

10 + 6

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd7
      • 2.Qc8#
    • 1...Sxd6+
      • 2.Qxd6#
    • 1...Sa7
      • 2.Bf5#
    • 1...Sc7
      • 2.Bf5#
  • Tries
    • 1.Re8+?
      • 1...Kxd7
        • 2.Sf6#
        • 2.Qxb5#
        • 2.Qc8#
      • 1...Kxf7!
  • Keys
    • 1.Se5!
      • threat
        • 2.Re8#
      • 1...Sxd6+
        • 2.Qxd6#
      • 1...Kxe5
        • 2.d7#
      • 1...Rxe5
        • 2.Qc8#
      • 1...Sc7
        • 2.dxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(f);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
    • S(e);CHECK,OGATE,P_SPINS(e),XP(D)::QAR1(C),XS(e)
    • S(e);::B(G)
  • Tries
    • Try
      • R(I);CHECK
      • Refutation
        • K(f);S_FLIGHT,XP(F)
  • Actual
    • S(E);
    • Threat
      • R(I)
    • Vars
      • S(e);CHECK,OGATE,P_SPINS(e),XP(D)::QAR1(C),XS(e)
      • K(f);P-FLIGHT,P_SPINS(e),XS(E)::B(H)+P(D)
      • R(a);SBLOCK,XS(E)::QAB(C)
      • S(e);OGATE::QAR(C)+P(D),XS(e)
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