MESON Chess Problem Database

Problem Display
PID: 114892 (8/3P3B/K1PPk3/7n/3b1R1q/8/6QB/8 w - - 0 1)

Arnstam, Knut Anders Olof

Arbejder-Skak, 1960

8/3P3B/K1PPk3/7n/3b1R1q/8/6QB/8

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bg8+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxd6!
  • Keys
    • 1.Rf6+!
      • 1...Kxf6
        • 2.Qg6#
      • 1...Qxf6
        • 2.Qa2#
      • 1...Bxf6
        • 2.Qg8#
      • 1...Sxf6
        • 2.d8S#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT,XP(F)
  • Actual
    • R(C);CHECK
    • Vars
      • K(d);P-FLIGHT,XR(C)::QAR1(A)
      • Q(b);SBLOCK,XR(C)::QAB(A)
      • B(a);SBLOCK,XR(C)::QAB(A)
      • S(c);N_GUARD,SBLOCK,S_CUTB(a),S_CUTQ(b),XR(C)::P=S
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