MESON Chess Problem Database

Problem Display
PID: 205653 (6rB/3p1nrn/R5Q1/2p1k3/3p1p1N/5B1b/8/6K1 w - - 0 1)

Reynolds, FM

The Observer, 1953

(First published on Sun Jul 26 1953)

6rB/3p1nrn/R5Q1/2p1k3/3p1p1N/5B1b/8/6K1

#2

6 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Qe4#
      • 2.Qf5#
    • 1...Bg4
      • 2.Qe4#
    • 1...Sfg5
      • 2.Qd6#
    • 1...Shg5
      • 2.Qf6#
  • Tries
    • 1.Ba8?
      • threat
        • 2.Sf3#
      • 1...f3
        • 2.Qg3#
      • 1...Bg2
        • 2.Qf5#
      • 1...Bg4
        • 2.Qe4#
      • 1...Sfg5
        • 2.Qd6#
      • 1...Shg5
        • 2.Qf6#
      • 1...Rxa8!
    • 1.Bxg7+?
      • 1...Sf6
        • 2.Bxf6#
        • 2.Qe4#
        • 2.Qxf6#
      • 1...Rxg7!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Sf3#
      • 1...f3
        • 2.Qg3#
      • 1...Bg2
        • 2.Qf5#
      • 1...Bg4
        • 2.Qe4#
      • 1...Sfg5
        • 2.Qd6#
      • 1...Shg5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_PINQ(E)::QAR1(E)
    • S(g);N_PINQ(E)::QAB1(E)
    • S(i);N_PINQ(E)::QAB1(E)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(C)
      • Vars
        • P(c);::QAB(E)
        • B(a);N_PINQ(E)::QAR1(E)
        • S(g);N_PINQ(E)::QAB1(E)
        • S(i);N_PINQ(E)::QAB1(E)
      • Refutation
        • R(j);XB(B)
    • Try
      • B(F);CHECK,N_SPINQ(E),XR(h)
      • Refutation
        • R(j);P_PINQ(E),XB(F)
  • Actual
    • B(B);
    • Threat
      • S(C)
    • Vars
      • P(c);::QAB(E)
      • B(a);N_PINQ(E)::QAR1(E)
      • S(g);N_PINQ(E)::QAB1(E)
      • S(i);N_PINQ(E)::QAB1(E)
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