MESON Chess Problem Database

Problem Display
PID: 229807 (R7/1N6/b7/1B6/1k1p4/1p6/5Q2/KN6 w - - 0 1)

Prideaux, Henry Maxwell

The Field, 1897

(First published on Sat May 15 1897)

R7/1N6/b7/1B6/1k1p4/1p6/5Q2/KN6

#2

6 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b2+
      • 2.Qxb2#
    • 1...d3
      • 2.Qc5#
  • Tries
    • 1.Bxa6?
      • threat
        • 2.Qxd4#
      • 1...Ka4
        • 2.Qxd4#
      • 1...d3
        • 2.Qd4#
        • 2.Qh4#
        • 2.Qf4#
      • 1...b2+!
    • 1.Rxa6?
      • 1...b2+
        • 2.Qxb2#
      • 1...d3
        • 2.Qc5#
      • 1...Kxb5!
    • 1.Qf5?
      • threat
        • 2.Qc5#
      • 1...Bxb7
        • 2.Ra4#
      • 1...b2+!
  • Keys
    • 1.Sa3!
      • 1...b2+
        • 2.Qxb2#
      • 1...Kxa3
        • 2.Qf8#
      • 1...Kc3
        • 2.Qe1#
      • 1...Bxb5
        • 2.Qe1#
        • 2.Qd2#
      • 1...Bxb7
        • 2.Qxd4#
      • 1...d3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK,OGATEB::QAR2(C),XP(a)
    • P(c);OGATE::QAB1(C)
  • Tries
    • Try
      • B(D);XB(d)
      • Threat
        • QAR2(C),XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR(C),XP(c)
      • Refutation
        • P(a);CHECK
    • Try
      • R(F);XB(d)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(C),XP(a)
        • P(c);OGATE::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,XB(D)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • B(d);OGATE,XS(E)::R1(F)
      • Refutation
        • P(a);CHECK
  • Actual
    • S(B);
    • Vars
      • P(a);CHECK,OGATEB::QAR2(C),XP(a)
      • K(b);P_SPINB(d),S_FLIGHT,XS(B)::QAB(C)
      • K(b);S_FLIGHT::QAB(C)
      • B(d);XS(E)::QAR2(C),XP(c)
      • P(c);OGATE::QAB1(C)
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