MESON Chess Problem Database

Problem Display
PID: 11073 (8/6pr/5N1P/4Pk1B/5B2/KQ2PRp1/1p1P4/1b4q1 w - - 0 1)

Rudd, Charles Dember

Chess, 1936

8/6pr/5N1P/4Pk1B/5B2/KQ2PRp1/1p1P4/1b4q1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.e4#
    • 1...g5
      • 2.Bxg3#
    • 1...g6
      • 2.Bg4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sd6#
      • 1...Ke4
        • 2.Sd6#
      • 1...Rxh6!
    • 1.Bg5+?
      • 1...Kxe5
        • 2.Qd5#
      • 1...Kxg5!
    • 1.Qd3+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Bxd3!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qd7#
      • 1...Qxe3+
        • 2.Bxe3#
      • 1...gxf6
        • 2.e6#
      • 1...gxh6
        • 2.Bxh6#
      • 1...Ba2
        • 2.e4#
      • 1...g5
        • 2.Bxg3#
      • 1...g6
        • 2.Bg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::P(D)
    • P(f);SBLOCK::R(E)+B(F),XP(d)
    • P(f);SBLOCK::B(H)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • K(e);S_FLIGHT::S(I)
      • Refutation
        • R(g);XP(J)
    • Try
      • B(F);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(G)::QAR1(C)
      • Refutation
        • K(e);P-FLIGHT,XB(F)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(C)
      • Refutation
        • B(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • Q(b);CHECK,OGATE,XP(D)::R(E)+B(F),XQ(b)
      • P(f);SBLOCK,XS(I)::QAR(C)+P(G)
      • P(f);OGATE,XP(J)::R(E)+B(F),XP(f)
      • B(a);N_GUARD::P(D)
      • P(f);SBLOCK::R(E)+B(F),XP(d)
      • P(f);SBLOCK::B(H)
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