MESON Chess Problem Database

Problem Display
PID: 4609 (1N4bK/8/3p3p/r2k4/1p6/1P4R1/4Q3/3r2B1 w - - 0 1)

Laws, Benjamin Glover

Jamaica Gleaner, 1883

1N4bK/8/3p3p/r2k4/1p6/1P4R1/4Q3/3r2B1

#2

6 + 7

3571 An English Bohemian 1933
3242 BCPS Rapid Solving (Cheltenham) 2001
5454 Near Snap 2007
14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rda1
      • 2.Rd3#
    • 1...Rb1
      • 2.Rd3#
    • 1...Rc1
      • 2.Rd3#
    • 1...Re1
      • 2.Rd3#
    • 1...Rf1
      • 2.Rd3#
    • 1...Rd3
      • 2.Rxd3#
    • 1...h5
      • 2.Rg5#
  • Keys
    • 1.Re3!
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Rd3#
      • 1...Kc5
        • 2.Re5#
      • 1...Rc1
        • 2.Rd3#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Rd4
        • 2.Qh5#
      • 1...Rc5
        • 2.Qxd1#

This anticipates 17324(1946)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::R(D)
    • R(a);N_GUARD::R(D),XR(a)
    • P(f);N_GUARD::R(D)
  • Actual
    • R(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(d);P-FLIGHT::B(A)+R(D),DCHECK
      • R(a);N_GUARD::R(D)
      • R(a);N_GUARD::R(D),XR(a)
      • R(a);SBLOCK::QAR(B)
      • R(c);SBLOCK::QAR(B),XR(a)
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