MESON Chess Problem Database

Problem Display
PID: 265051 (8/1n1Bp3/8/3kp3/2R1R1p1/8/2KP1B2/3Q4 w - - 0 1)

Head, Arthur James

Sunday Referee, 1936

(First published on Sun Jun 14 1936)

8/1n1Bp3/8/3kp3/2R1R1p1/8/2KP1B2/3Q4

#2

7 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rcd4+?
      • 1...Kc5
        • 2.Rd3#
      • 1...exd4!
    • 1.Qe2?
      • threat
        • 2.Qd3#
      • 1...Kd6
        • 2.Qd3#
      • 1...Sc5!
    • 1.Qf3?
      • threat
        • 2.Red4#
        • 2.Qd3#
      • 1...Kd6
        • 2.Qd3#
      • 1...Sc5
        • 2.Red4#
      • 1...gxf3!
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...Kd6
        • 2.Qd3#
      • 1...Sc5!
  • Keys
    • 1.d4!
      • threat
        • 2.dxe5#
      • 1...Kxc4
        • 2.dxe5#
        • 2.d5#
      • 1...Kxe4
        • 2.d5#
      • 1...Kd6
        • 2.dxe5#
      • 1...exd4
        • 2.Qxd4#
      • 1...Sc5
        • 2.dxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::B(D)+R(E)
      • Refutation
        • P(c);XR(E)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
        • S(d);::QAB(A)+R(F),DCHECK
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • S(d);
  • Actual
    • P(C);
    • Threat
      • QAR(A)+P(C),XP(c)
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(F)::R(E)+P(C)
      • K(b);P-FLIGHT::QAR(A)+P(C)DCHECK,XP(c)
      • P(c);OGATE,P_SPINP(c),XP(C)::QAR1(A),XP(c)
      • S(d);OGATE::QAR(A)+P(C),XS(d)
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