MESON Chess Problem Database

Problem Display
PID: 48333 (8/4Rp2/3Pp2Q/1PNpkPp1/p5K1/B7/B4P2/8 w - - 0 1)

Lord, Frederick William

Problem Observer, 2003

8/4Rp2/3Pp2Q/1PNpkPp1/p5K1/B7/B4P2/8

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Sd3#
  • Tries
    • 1.Rxe6+?
      • 1...Kd4
        • 2.Qf6#
      • 1...fxe6!
    • 1.Qxg5?
      • 1...Kd4
        • 2.Qe3#
      • 1...Kxd6
        • 2.Sd3#
      • 1...f6
        • 2.Qf4#
      • 1...d4!
    • 1.Qg7+?
      • 1...Kxd6
        • 2.Sb3#
        • 2.Sd3#
        • 2.Sxa4#
        • 2.Se4#
        • 2.Sa6#
        • 2.Sxe6#
        • 2.Sb7#
        • 2.Rd7#
      • 1...f6!
    • 1.Qh2+?
      • 1...Kf6
        • 2.Qh8#
      • 1...Kd4!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Qe3#
        • 2.Qe5#
        • 2.Qf6#
      • 1...fxe6!
    • 1.Qf6+?
      • 1...Kxd6
        • 2.Sb3#
        • 2.Sd3#
        • 2.Sxa4#
        • 2.Se4#
        • 2.Sa6#
        • 2.Sxe6#
        • 2.Sb7#
        • 2.Rd7#
      • 1...Kxf6!
    • 1.Qh8+?
      • 1...Kxd6
        • 2.Sb3#
        • 2.Sd3#
        • 2.Sxa4#
        • 2.Se4#
        • 2.Sa6#
        • 2.Sxe6#
        • 2.Sb7#
        • 2.Rd7#
      • 1...f6!
  • Keys
    • 1.Qh1!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kxd6
        • 2.Sd3#
      • 1...Kf6
        • 2.Qh8#
      • 1...d4
        • 2.Sd7#
      • 1...f6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XP(H)::B(C)+S(F)
  • Tries
    • Try
      • R(J);CHECK,XP(e)
      • Vars
        • K(c);S_FLIGHT::QAB(I)
      • Refutation
        • P(f);XR(J)
    • Try
      • Q(I);XP(d)
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT::QAB1(I)
        • K(c);N_SPINP(e),S_FLIGHT,XP(H)::B(C)+S(F)
        • P(f);SBLOCK::QAB1(I)
      • Refutation
        • P(b);
    • Try
      • Q(I);CHECK
      • Refutation
        • P(f);
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT::QAB(I)
      • Refutation
        • K(c);N_SPINP(e),S_FLIGHT
    • Try
      • Q(I);CHECK,XP(e)
      • Refutation
        • P(f);P_SPINP(f),XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • K(c);N_SPINP(e),S_FLIGHT,XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • P(f);
  • Actual
    • Q(I);
    • Vars
      • K(c);N_SPINP(e),S_FLIGHT::QAB(I)
      • K(c);N_SPINP(e),S_FLIGHT,XP(H)::B(C)+S(F)
      • P(b);SBLOCK::S(F)
      • P(f);SBLOCK::QAR1(I),XP(b)
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