MESON Chess Problem Database

Problem Display
PID: 147130 (2QRr3/8/3P1nN1/1Kbk1p2/2p1b3/2P5/8/8 w - - 0 1)

Shire, David J

Australian Chess Problem Magazine, 1997

2QRr3/8/3P1nN1/1Kbk1p2/2p1b3/2P5/8/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sf4#
    • 1...Re6
      • 2.Qb7#
      • 2.Qxc5#
      • 2.Qc6#
      • 2.Qa8#
    • 1...Bg1
      • 2.Qxc4#
    • 1...Bf2
      • 2.Qxc4#
    • 1...Ba3
      • 2.Qxc4#
    • 1...Be3
      • 2.Qxc4#
    • 1...Bb4
      • 2.Qxc4#
    • 1...Bd4
      • 2.Qxc4#
    • 1...Bb6
      • 2.Qxc4#
    • 1...Bxd6
      • 2.Qxc4#
    • 1...Ba7
      • 2.Qxc4#
  • Tries
    • 1.Qxf5+?
      • 1...Re5
        • 2.Sf4#
        • 2.Se7#
        • 2.Qxe5#
      • 1...Bxf5!
  • Keys
    • 1.d7!
      • threat
        • 2.Qc6#
      • 1...Kd6
        • 2.dxe8S#
      • 1...Ke6
        • 2.dxe8Q#
      • 1...Re6
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qxc4#

There are these versions: 34617

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(g);SBLOCK::S(D)
    • B(c);OGATE::QAB1(E),XP(a)
    • B(c);OGATE,P_SPINB(c),XP(C)::QAB1(E),XP(a)
  • Tries
    • Try
      • Q(E);CHECK,XP(e)
      • Refutation
        • B(b);XQ(E)
  • Actual
    • P(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(d);P-FLIGHT::PXR(g)=S
      • K(d);S_FLIGHT::PXR(g)=Q
      • R(g);SBLOCK::QAR1(E),XB(c)
      • B(c);OGATE,SBLOCK::QAB1(E),XP(a)
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