MESON Chess Problem Database

Problem Display
PID: 227226 (3K4/1p1p1QNB/5p1b/p3pbR1/r4k2/p5R1/3P4/1rBN3q w - - 0 1)

Leaver, Rev DC

Sunday Chronicle, 1946

(First published on Sun Oct 20 1946)

3K4/1p1p1QNB/5p1b/p3pbR1/r4k2/p5R1/3P4/1rBN3q

#2

9 + 12

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Sh5#
    • 1...Rb3
      • 2.d3#
    • 1...Rbb4
      • 2.d3#
    • 1...Rb5
      • 2.d3#
    • 1...Rb6
      • 2.d3#
    • 1...Bc2
      • 2.R5g4#
    • 1...Bd3
      • 2.R5g4#
    • 1...Bh3
      • 2.Sh5#
    • 1...Be4
      • 2.R5g4#
    • 1...Bg4
      • 2.R5xg4#
    • 1...Bg6
      • 2.R5g4#
    • 1...Bxh7
      • 2.R5g4#
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.R3g4#
      • 1...Rxb3
        • 2.d3#
      • 1...Qf3
        • 2.Qxf3#
      • 1...Qe4
        • 2.Sh5#
      • 1...Qe1
        • 2.Qf3#
      • 1...Qg1
        • 2.Qf3#
      • 1...Re4
        • 2.Rxf5#
      • 1...Bd3
        • 2.R5g4#
      • 1...e4
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD,SBLOCK::S(G)
    • R(a);N_GUARD::B(A)+P(C)
    • B(h);N_GUARD,P_SPINP(i)::R1(E)
    • B(h);P_SPINP(i),S_CUTQ(b)::S(G)
    • B(h);N_GUARD,P_SPINP(i)::R1(E),XB(h)
    • B(h);N_GUARD,P_SPINP(i),XB(H)::R1(E)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(e);P-FLIGHT,P_SPINB(h)::R(D)
      • R(a);N_GUARD,XQ(F)::B(A)+P(C)
      • Q(b);N_GUARD::QAR1(F),XQ(b)
      • Q(b);N_GUARD,SBLOCK::S(G)
      • Q(b);N_GUARD::QAR1(F)
      • R(d);SBLOCK::R1(E),XB(h)
      • B(h);N_GUARD::R1(E)
      • P(g);SBLOCK::R1(E),XB(h)
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