MESON Chess Problem Database

Problem Display
PID: 116983 (4B3/Kn4R1/7k/8/4N3/Q3R3/1B5r/2r1n1b1 w - - 0 1)

Kipping, Cyril Stanley

To Alain White, 1945

4B3/Kn4R1/7k/8/4N3/Q3R3/1B5r/2r1n1b1

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Rh3#
    • 1...Bxe3+
      • 2.Qxe3#
    • 1...Sa5
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
  • Tries
    • 1.Rg6+?
      • 1...Kh7
        • 2.Sg5#
        • 2.Qe7#
      • 1...Kh5!
    • 1.Qa6+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Rc6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf5#
      • 1...Bxe3+
        • 2.Qxe3#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...Rc5
        • 2.Re6#
      • 1...Rf2
        • 2.Rh3#
      • 1...Rh5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);N_PINR(C)::R(C)
    • B(c);CHECK,OGATE,XR(C)::QAB(B),XB(c)
    • S(f);N_GUARD::QAR(B)
    • S(f);N_GUARD::QAR(B),XS(f)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAR(B),XS(f)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • B(c);CHECK,OGATE,XR(C)::QAB(B),XB(c)
      • S(f);OGATE,XS(D)::QAR(B),XS(f)
      • R(a);N_PINR(C)::R(C)
      • R(d);N_PINR(C)::R(C)
      • R(d);SBLOCK::S(D)
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