MESON Chess Problem Database

Problem Display
PID: 182501 (8/2R2B2/r2k4/8/8/b1Q3K1/8/8 w - - 0 1)

Weenink, Henri Gerard Maria

Clubniews, 1918

(First published on Sat May 18 1918)

8/2R2B2/r2k4/8/8/b1Q3K1/8/8

#2

4 + 3

16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qc5#
    • 1...Bb2
      • 2.Qc5#
    • 1...Bc5
      • 2.Qxc5#
  • Tries
    • 1.Ra7?
      • threat
        • 2.Qc7#
      • 1...Bc5
        • 2.Qf6#
      • 1...Rc6
        • 2.Qd4#
      • 1...Rxa7!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxc7!
    • 1.Qe3?
      • threat
        • 2.Qf4#
        • 2.Qe7#
      • 1...Ra4
        • 2.Qe7#
      • 1...Ra5
        • 2.Qe7#
      • 1...Rc6
        • 2.Qe7#
      • 1...Bc1
        • 2.Qc5#
        • 2.Qe7#
      • 1...Bb2
        • 2.Qc5#
        • 2.Qe7#
      • 1...Kxc7!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Qc7#
      • 1...Bc5
        • 2.Qf6#
      • 1...Rc6
        • 2.Qd4#

This anticipates 232463(2007)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • B(a);SBLOCK::QAR2(A)
        • R(b);SBLOCK::QAR2(A)
      • Refutation
        • R(b);XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • B(a);SBLOCK::QAR2(A)
      • R(b);SBLOCK::QAR2(A)
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