MESON Chess Problem Database

Problem Display
PID: 278068 (8/3Q2bb/2p5/n1RNp2n/3Bk1P1/4p3/KP2N1P1/5B2 w - - 0 1)

Shire, David J

Phenix, 2007

8/3Q2bb/2p5/n1RNp2n/3Bk1P1/4p3/KP2N1P1/5B2

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qxh7#
    • 1...Bh6
      • 2.Qxh7#
    • 1...Bf8
      • 2.Qxh7#
    • 1...Bh8
      • 2.Qxh7#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Bg8
      • 2.Qf5#
  • Tries
    • 1.Sf6+?
      • 1...Kd3
        • 2.Bxe5#
      • 1...Bxf6
        • 2.Qxh7#
      • 1...Sxf6!
    • 1.Bxe3?
      • threat
        • 2.Sec3#
      • 1...Kd3
        • 2.Sg3#
      • 1...cxd5!
  • Keys
    • 1.Bxe5!
      • threat
        • 2.Sdc3#
      • 1...Kd3
        • 2.Sf6#
      • 1...Kxe5
        • 2.Qe7#
      • 1...Bxe5
        • 2.Qxh7#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Bg8
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(g);OGATE::QAB(J),XB(h)
    • B(h);N_GUARD::QAB1(J),XB(h)
    • B(h);N_GUARD,P_PINS(I)::QAB1(J)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(b);S_CUTB(g),S_CUTS(e),S_FLIGHT::QAR(J)+B(F),XP(d)
        • B(g);OGATE,XS(I)::QAB(J),XB(h)
      • Refutation
        • S(e);XS(I)
    • Try
      • B(F);XP(a)
      • Threat
        • S(D)
      • Vars
        • K(b);S_CUTS(e),S_FLIGHT::B(A)+S(D)
      • Refutation
        • P(f);XS(I)
  • Actual
    • B(F);XP(d)
    • Threat
      • S(I)
    • Vars
      • K(b);S_CUTB(g),S_CUTS(e),S_FLIGHT::QAR(J)+S(I)
      • K(b);OGATEB,P-FLIGHT,XB(F)::QAR2(J)
      • B(g);OGATE,SBLOCK,XB(F)::QAB(J),XB(h)
      • P(f);OGATE,XS(I)::QAB1(J),XP(f)
      • B(h);N_GUARD,P_PINS(I)::QAB1(J)
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