MESON Chess Problem Database

Problem Display
PID: 211327 (8/4R3/3p4/2p3Q1/3kp3/1P6/3p3q/1K1N3b w - - 0 1)

Laws, Benjamin Glover

The Observer, 1922

(First published on Sun May 7 1922)

8/4R3/3p4/2p3Q1/3kp3/1P6/3p3q/1K1N3b

#2

5 + 7

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qe3#
    • 1...Qg1
      • 2.Qxd2#
    • 1...Qe5
      • 2.Qxd2#
    • 1...Qh4
      • 2.Qxd2#
    • 1...Qh5
      • 2.Qxd2#
    • 1...Qh7
      • 2.Qxd2#
    • 1...Qh8
      • 2.Qxd2#
    • 1...Bg2
      • 2.Qxd2#
    • 1...d5
      • 2.Qe3#
  • Keys
    • 1.Re5!
      • threat
        • 2.Rd5#
      • 1...Kd3
        • 2.Qe3#
      • 1...Qxe5
        • 2.Qxd2#
      • 1...dxe5
        • 2.Qd8#
      • 1...e3
        • 2.Qxe3#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(d);P-FLIGHT::QAR1(D)
    • Q(c);N_GUARD,P_PINS(B)::QAR2(D),XP(b)
    • Q(c);N_GUARD::QAR2(D),XP(b)
    • B(a);S_CUTQ(c)::QAR2(D),XP(b)
    • P(g);SBLOCK::QAB1(D)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(d);P-FLIGHT::QAR1(D)
      • Q(c);N_GUARD,SBLOCK,XR(E)::QAR2(D),XP(b)
      • P(g);OGATEB,SBLOCK,XR(E)::QAR(D)
      • P(e);::QAB1(D),XP(e)
      • P(g);::R1(E),XP(g)
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