MESON Chess Problem Database

Problem Display
PID: 197440 (7K/6p1/6pp/7R/4QbkN/5R2/8/8 w - - 0 1)

Head, Arthur James

Western Daily Mercury, 1918

(First published on Fri Nov 15 1918)

7K/6p1/6pp/7R/4QbkN/5R2/8/8

#2

5 + 5

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...gxh5
      • 2.Qxf4#
  • Tries
    • 1.Rg3+?
      • 1...Kxg3
        • 2.Qg2#
      • 1...Kxh5!
    • 1.Rxf4+?
      • 1...Kh3
        • 2.Qg2#
      • 1...Kxh5
        • 2.Qxg6#
      • 1...Kg3!
    • 1.Ra5?
      • threat
        • 2.Qxf4#
      • 1...Kxh4
        • 2.Qxf4#
      • 1...g5!
    • 1.Rb5?
      • threat
        • 2.Qxf4#
      • 1...Kxh4
        • 2.Qxf4#
      • 1...g5!
    • 1.Rc5?
      • threat
        • 2.Qxf4#
      • 1...Kxh4
        • 2.Qxf4#
      • 1...g5!
    • 1.Rd5?
      • threat
        • 2.Qxf4#
      • 1...Kxh4
        • 2.Qxf4#
      • 1...g5!
    • 1.Re5?
      • threat
        • 2.Qxf4#
      • 1...Kxh4
        • 2.Qxf4#
      • 1...g5!
    • 1.Rxh6?
      • threat
        • 2.Qxf4#
      • 1...Kg5
        • 2.Qxg6#
        • 2.Qxf4#
      • 1...g5
        • 2.Qf5#
        • 2.Qe6#
      • 1...gxh6!
  • Keys
    • 1.Rh3!
      • threat
        • 2.Qf3#
      • 1...Kxh3
        • 2.Qg2#
      • 1...Kxh5
        • 2.Qxg6#
      • 1...gxh5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK,XR(D)::QAR1(B),XB(a)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT,XR(A)::QAR1(B)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XR(D)
    • Try
      • R(A);CHECK,XB(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • K(b);S_FLIGHT,XR(D)::QAB1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Threat
        • QAR1(B),XB(a)
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Threat
        • QAR1(B),XB(a)
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Threat
        • QAR1(B),XB(a)
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Threat
        • QAR1(B),XB(a)
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Threat
        • QAR1(B),XB(a)
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(D);XP(d)
      • Threat
        • QAR1(B),XB(a)
      • Refutation
        • P(e);XR(D)
  • Actual
    • R(A);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT,XR(A)::QAB1(B)
      • K(b);N_SPINB(a),S_FLIGHT,XR(D)::QAB1(B),XP(c)
      • P(c);N_GUARD,XR(D)::QAB1(B)
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