MESON Chess Problem Database

Problem Display
PID: 67492 (1b6/p7/4R1Q1/n1pkp3/8/2K5/8/8 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1948

1b6/p7/4R1Q1/n1pkp3/8/2K5/8/8

#2

3 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Rxd6#
    • 1...e4
      • 2.Qxe4#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Qd3#
      • 1...c4
        • 2.Rb5#
      • 1...e4
        • 2.Qe6#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...axb6!
    • 1.Qg2+?
      • 1...e4
        • 2.Qxe4#
      • 1...Kxe6!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Qd3#
      • 1...c4
        • 2.Rxa5#
      • 1...e4
        • 2.Qe6#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::R1(B),XB(f)
    • P(d);::QAB1(C),XP(d)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR2(C)
      • Vars
        • P(b);OGATEB::R(B)
        • P(d);::QAB1(C)
        • B(f);N_GUARD::R1(B),XB(f)
        • S(a);N_GUARD::QAB1(C)
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • P(e);XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • P(d);P_SPINP(d)::QAB1(C),XP(d)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
  • Actual
    • R(B);
    • Threat
      • QAR2(C)
    • Vars
      • P(b);OGATEB::R(B),XS(a)
      • P(d);::QAB1(C)
      • B(f);N_GUARD::R1(B),XB(f)
      • S(a);N_GUARD::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
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