MESON Chess Problem Database

Problem Display
PID: 18451 (2b5/1pPp3R/1P2N3/1Qp1k3/3p1N2/3P3K/7B/5R2 w - - 0 1)

Stewart, John

Stubbs, Arthur Goodwin

Time & Tide, 1955

2b5/1pPp3R/1P2N3/1Qp1k3/3p1N2/3P3K/7B/5R2

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qxc5#
  • Tries
    • 1.Re1+?
      • 1...Kf5
        • 2.Rf7#
      • 1...Kd6
        • 2.Qxc5#
      • 1...Kf6!
    • 1.Rh5+?
      • 1...Kd6
        • 2.Qxc5#
      • 1...Kf6!
    • 1.Rh6?
      • 1...Kf5
        • 2.Se2#
        • 2.Sg2#
        • 2.Sd5#
        • 2.Sh5#
      • 1...Kd6
        • 2.Qxc5#
      • 1...dxe6
        • 2.Qxc5#
      • 1...d5
        • 2.Se2#
        • 2.Sg2#
        • 2.Sh5#
      • 1...d6!
    • 1.Rf7?
      • 1...Kd6
        • 2.Qxc5#
      • 1...dxe6
        • 2.Qxc5#
      • 1...d6
        • 2.Re1#
      • 1...d5!
    • 1.Qxc5+?
      • 1...Kf6
        • 2.Qg5#
      • 1...d5!
  • Keys
    • 1.Sxc5!
      • 1...d5+
        • 2.Sfe6#
      • 1...d6+
        • 2.Sd7#
      • 1...Kf5
        • 2.Sxd7#
      • 1...Kd6
        • 2.Se4#
      • 1...Kf6
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),S_FLIGHT::QAB1(F),XP(b)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT::R(J)
        • K(c);N_SPINP(b),S_FLIGHT::QAB1(F),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(J);CHECK
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB1(F),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(J);
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB1(F),XP(b)
        • P(e);N_GUARD,XS(H)::QAR2(F),XP(b)
      • Refutation
        • P(e);P_PINS(H)
    • Try
      • R(J);
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB1(F),XP(b)
        • P(e);N_GUARD,XS(H)::QAR2(F),XP(b)
        • P(e);P_PINS(H),SBLOCK::R(A)
      • Refutation
        • P(e);N_SPINP(b),P_PINS(H)
    • Try
      • Q(F);CHECK,XP(b)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • P(e);P_PINS(H),P_SPINP(e)
  • Actual
    • S(H);XP(b)
    • Vars
      • P(e);CHECK,SBLOCK::B(B)+S(E)
      • P(e);CHECK,SBLOCK::QAR(F)+S(H),DCHECK
      • K(c);P-FLIGHT::QAR(F)+S(H),XP(e)
      • K(c);S_FLIGHT::S(H)
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