MESON Chess Problem Database

Problem Display
PID: 52390 (2n2K2/1Q3Pr1/3pk3/5bp1/4p1q1/2B1nNNB/8/8 w - - 0 1)

Kish, Alexander

Christian Science Monitor, 1935

(First published on Tue Nov 19 1935)

2n2K2/1Q3Pr1/3pk3/5bp1/4p1q1/2B1nNNB/8/8

#2

7 + 9

5064 100 Years of the American Two-move Chess Problem 1962

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf7+
      • 2.Qxf7#
    • 1...Rg8+
      • 2.fxg8Q#
      • 2.fxg8B#
    • 1...Bg6
      • 2.Sxg5#
    • 1...Sd5
      • 2.Qxc8#
  • Keys
    • 1.Ke8!
      • threat
        • 2.f8S#
      • 1...Rg8+
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...d5
        • 2.Qd7#
      • 1...Qh5
        • 2.Qxe4#
      • 1...Bg6
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(h);CHECK,OGATE,XP(F)::QAB1(E),XR(h)
    • R(h);CHECK,OGATE::PXR(h)=Q
    • B(d);P_SPINQ(c),S_CUTR(h)::S(B),XP(e)
    • S(a);SBLOCK::QAB(E),XS(i)
  • Actual
    • K(G);P-FLIGHT
    • Threat
      • P=S
    • Vars
      • R(h);CHECK,OGATE::PXR(h)=Q
      • R(h);OGATE,XP(F)::QAB1(E),XR(h)
      • P(f);::QAB1(E)
      • Q(c);N_GUARD,P_PINP(F),P_SPINB(d)::QAR2(E),XP(b)
      • B(d);P_PINP(F),P_SPINQ(c),S_CUTR(h)::S(B),XP(e)
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