MESON Chess Problem Database

Problem Display
PID: 80340 (1Q4bB/3p1R2/4kN2/4N3/6K1/b3p3/8/8 w - - 0 1)

Goldschmeding, Cornelis

Weenink MT, 1957

1Q4bB/3p1R2/4kN2/4N3/6K1/b3p3/8/8

#2

6 + 5

5227 Schaak..., maar raak! 1969

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qe8#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd8#
      • 1...Kxf7
        • 2.Qe8#
        • 2.Qxg8#
      • 1...Bxf7
        • 2.Qe5#
      • 1...Bd6
        • 2.Qb3#
      • 1...Be7
        • 2.Rxe7#
      • 1...d6
        • 2.Re7#
        • 2.Qe8#
      • 1...dxc6!
    • 1.Qb3+?
      • 1...Kxe5
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Kd6!
    • 1.Qe8+?
      • 1...Be7
        • 2.Qxe7#
      • 1...Kd6!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sg5#
      • 1...Kxf7
        • 2.Qe8#
      • 1...Bxf7
        • 2.Qe5#
      • 1...Bd6
        • 2.Qb3#
      • 1...d6
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK,S_CUTB(a)::QAR2(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(e);SBLOCK,XR(D)::QAR1(E)
        • B(a);SBLOCK,S_CUTP(d)::QAB(E)
        • B(a);N_GUARD::R1(D),XB(a)
      • Refutation
        • P(d);XS(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(B)::QAR1(E)
        • P(d);P_SPINP(d)::QAB1(E),XP(d)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(E),XB(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT,XR(D)::QAB1(E)
      • B(e);SBLOCK,XR(D)::QAR1(E)
      • B(a);SBLOCK,S_CUTP(d)::QAB(E)
      • P(d);SBLOCK,S_CUTB(a)::QAR2(E)
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