MESON Chess Problem Database

Problem Display
PID: 267100 (1bn1b1r1/R1p1pkP1/1p3P1B/3P2Q1/2BK4/8/8/8 w - - 0 1)

Szoghy, Jozsef

3rd HM., Pedagogusok Lapja, 1976

(First published on Fri Oct 8 1976)

1bn1b1r1/R1p1pkP1/1p3P1B/3P2Q1/2BK4/8/8/8

#2

8 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg7
      • 2.Qxg7#
    • 1...Rf8
      • 2.gxf8Q#
      • 2.gxf8R#
    • 1...Rh8
      • 2.gxh8S#
    • 1...c5+
      • 2.dxc5 ep#
    • 1...c6
      • 2.dxc6#
      • 2.d6#
    • 1...exf6
      • 2.d6#
    • 1...e5+
      • 2.dxe5 ep#
    • 1...e6
      • 2.dxe6#
  • Keys
    • 1.Ke5!
      • threat
        • 2.Qh5#
      • 1...c5+
        • 2.d6#
      • 1...c6+
        • 2.d6#
      • 1...exf6+
        • 2.Qxf6#
      • 1...Rxg7
        • 2.Qxg7#
      • 1...Rf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Rh8
        • 2.gxh8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(h);OGATE,XP(H)::QAR1(D),XR(h)
    • R(h);OGATE::PXR(h)=Q
    • R(h);OGATE::PXR(h)=S
    • P(b);CHECK,OGATE,P_SPINP(c)::B(A)+P(C),XP(b),EP
    • P(c);N_GUARD,P_SPINP(b),XP(E)::B(A)+P(C)
    • P(c);CHECK,OGATE,P_SPINP(b)::P(C),XP(c),EP
    • P(c);OGATE,P_SPINP(b)::P(C),XP(c)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAB(D)
    • Vars
      • P(b);CHECK,P_SPINP(c)::B(A)+P(C)
      • P(c);CHECK,OGATE,P_SPINP(b),XP(E)::QAR1(D),XP(c)
      • R(h);OGATE,XP(H)::QAR1(D),XR(h)
      • R(h);OGATE::PXR(h)=Q
      • R(h);OGATE::PXR(h)=S
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