MESON Chess Problem Database

Problem Display
PID: 47168 (4K3/8/1b3p2/n2kP3/6Q1/2RN4/2P3b1/8 w - - 0 1)

Lazard, Frederic

Western Daily Mercury, 1905

4K3/8/1b3p2/n2kP3/6Q1/2RN4/2P3b1/8

#2

6 + 5

3310 2345 Chess Problems 1997
56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qd7#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bc7
      • 2.Rc5#
    • 1...Bd8
      • 2.Rc5#
    • 1...Sb3
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sc6
      • 2.Qc4#
    • 1...Sb7
      • 2.Qc4#
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rd6#
      • 1...Kxc6
        • 2.Qd7#
      • 1...Sxc6
        • 2.c4#
      • 1...fxe5
        • 2.Sb4#
      • 1...Be4
        • 2.Qd7#
      • 1...Bd4
        • 2.Qxg2#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Bc7
        • 2.Rc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#

This is after 142039

There are these versions: 158304

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::QAR2(D)
    • B(d);N_GUARD::R1(B),XB(d)
    • B(d);N_GUARD::R1(B)
    • S(b);N_GUARD::QAB1(D)
    • S(b);N_GUARD::QAB1(D),XS(b)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • K(c);S_FLIGHT,XR(B)::QAB1(D)
      • S(b);N_GUARD,SBLOCK,XR(B)::P(A)
      • P(e);SBLOCK,XP(E)::S(C)
      • B(a);SBLOCK::QAR2(D)
      • B(d);SBLOCK::QAB(D),XB(a)
      • B(d);N_GUARD::R1(B),XB(d)
      • B(d);N_GUARD::R1(B)
      • S(b);N_GUARD::QAB1(D),XS(b)
      • S(b);N_GUARD::QAB1(D)
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