MESON Chess Problem Database

Problem Display
PID: 258626 (7q/1Qn3p1/6B1/2p5/1pkp4/8/1K1B2R1/8 w - - 0 1)

Williams, Philip Hamilton

English Mechanic and World of Science, 1901

(First published on Fri Dec 13 1901)

7q/1Qn3p1/6B1/2p5/1pkp4/8/1K1B2R1/8

#2

5 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Qf7#
    • 1...Sd5
      • 2.Qa6#
    • 1...b3
      • 2.Qxb3#
    • 1...d3
      • 2.Rg4#
  • Tries
    • 1.Be3?
      • threat
        • 2.Rc2#
      • 1...dxe3
        • 2.Rg4#
      • 1...Sb5
        • 2.Qf7#
      • 1...Sd5
        • 2.Qa6#
      • 1...b3
        • 2.Qxb3#
      • 1...d3
        • 2.Rg4#
      • 1...Qh2!
    • 1.Bf7+?
      • 1...Kd3
        • 2.Qf3#
      • 1...Sd5
        • 2.Qa6#
      • 1...Se6!
    • 1.Rg3?
      • threat
        • 2.Bd3#
      • 1...d3
        • 2.Rg4#
      • 1...Qh7!
    • 1.Qa6+?
      • 1...Kd5
        • 2.Rg5#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sxa6!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Rc2#
      • 1...d3
        • 2.Rg4#
      • 1...Sb5
        • 2.Qf7#
      • 1...Sd5
        • 2.Qa6#
      • 1...b3
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE,SBLOCK::QAB(E)
    • S(e);N_GUARD,SBLOCK::QAB(E)
    • P(a);OGATE::QAB1(E),XP(a)
    • P(c);OGATEB::R(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • R(C)
      • Vars
        • P(c);OGATEB,XB(B)::R(C)
        • S(e);OGATE,SBLOCK::QAB(E)
        • S(e);N_GUARD,SBLOCK::QAB(E)
        • P(a);OGATE::QAB1(E),XP(a)
        • P(c);OGATEB::R(C)
      • Refutation
        • Q(g);P_PINR(C)
    • Try
      • B(D);CHECK
      • Vars
        • K(b);N_GUARD,S_CUTS(e),S_CUTS(e),S_FLIGHT::QAR2(E)
        • S(e);P_SPINS(e)::QAB(E)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • R(C);
      • Threat
        • B(D)
      • Vars
        • P(c);OGATEB::R(C)
      • Refutation
        • Q(g);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_CUTS(e),S_CUTS(e),S_FLIGHT::R(C)
        • S(e);N_GUARD,P_SPINS(e),SBLOCK::QAB(E)
      • Refutation
        • S(e);XQ(E)
  • Actual
    • B(B);
    • Threat
      • R(C)
    • Vars
      • P(c);OGATEB::R(C)
      • S(e);OGATE,SBLOCK::QAB(E)
      • S(e);N_GUARD,SBLOCK::QAB(E)
      • P(a);OGATE::QAB1(E),XP(a)
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