MESON Chess Problem Database

Problem Display
PID: 144006 (7b/8/1p5Q/3n2nP/4k2K/3Nqp2/1P1RpB2/1B1N4 w - - 0 1)

Wright, Roger John

Brighton Society, 1895

(First published on Sat Apr 20 1895)

7b/8/1p5Q/3n2nP/4k2K/3Nqp2/1P1RpB2/1B1N4

#2

9 + 8

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qg6#
    • 1...Qxd2
      • 2.Qg6#
    • 1...Qd4
      • 2.Qg6#
    • 1...Qc5
      • 2.Qg6#
    • 1...Bd4
      • 2.Qg6#
  • Tries
    • 1.Sc5+?
      • 1...Kf4
        • 2.Bg3#
        • 2.Qxg5#
      • 1...Ke5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sc5#
      • 1...Qxf2+
        • 2.S3xf2#
      • 1...Qf4+
        • 2.Sxf4#
      • 1...Kd4
        • 2.Se5#
      • 1...Kf5
        • 2.Qg6#
      • 1...Qxd3
        • 2.Bxd3#
      • 1...Qc5
        • 2.Sxc5#
        • 2.Qg6#
      • 1...Be5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • K(d);S_FLIGHT::QAB1(I)
    • Q(b);XR(D)::QAB(I)
    • Q(b);::QAB(I)
    • B(h);SBLOCK::QAB(I)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(I);
    • Threat
      • B(A)+S(F),DCHECK
    • Vars
      • Q(b);CHECK,XB(E)::B(A)+S(F),DCHECK,XQ(b)
      • Q(b);CHECK,N_GUARD::B(A)+S(F),XQ(b)
      • K(d);P-FLIGHT,P_SPINQ(b),P_SPINS(e)::R(D)+S(F)
      • K(d);S_FLIGHT::QAB1(I)
      • Q(b);OGATE,P_SPINQ(b),XS(F)::B(A),XQ(b)
      • B(h);N_GUARD::QAR1(I),XB(h)
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