MESON Chess Problem Database

Problem Display
PID: 21142 (5q2/2Q1R3/8/1p6/1K3P1k/R7/4B3/8 w - - 0 1)

Weenink, Henri Gerard Maria

Clubniews, 1917

(First published on Fri Sep 21 1917)

5q2/2Q1R3/8/1p6/1K3P1k/R7/4B3/8

#2

6 + 3

3360 Simple Two-move Themes 1924
20 De Problemist 1927
16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932
5501 Chess Cameos 1936
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe7+
      • 2.Qxe7#
    • 1...Qxf4+
      • 2.Qxf4#
    • 1...Qa8
      • 2.Rh7#
    • 1...Qb8
      • 2.Rh7#
    • 1...Qc8
      • 2.Rh7#
    • 1...Qd8
      • 2.Rh7#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qe1#
        • 2.Qh1#
      • 1...Qxf4+
        • 2.Qxf4#
      • 1...Qg7
        • 2.Qh1#
      • 1...Qf5
        • 2.Qe1#
      • 1...Qa8
        • 2.Rh7#
        • 2.Qe1#
      • 1...Qc8
        • 2.Rh7#
        • 2.Qe1#
      • 1...Qg8
        • 2.Qh1#
      • 1...Qxe7+!
    • 1.Qc5?
      • threat
        • 2.Qf2#
        • 2.Qg5#
        • 2.Qh5#
      • 1...Qxe7
        • 2.Qxe7#
      • 1...Qh6
        • 2.Qf2#
      • 1...Qg7
        • 2.Qh5#
      • 1...Qf5
        • 2.Qf2#
      • 1...Qf6
        • 2.Qf2#
        • 2.Qh5#
      • 1...Qf7
        • 2.Qf2#
        • 2.Qg5#
      • 1...Qe8
        • 2.Qf2#
        • 2.Qg5#
      • 1...Qg8
        • 2.Qh5#
      • 1...Qh8
        • 2.Qf2#
        • 2.Qg5#
      • 1...Qxf4+!
  • Keys
    • 1.Qd8!
      • 1...Qxe7+
        • 2.Qxe7#
      • 1...Qxf4+
        • 2.Re4#
      • 1...Qxd8
        • 2.Rh7#
      • 1...Qh6
        • 2.Rh7#
      • 1...Qg7
        • 2.Rxg7#
      • 1...Qf5
        • 2.Rh7#
      • 1...Qf6
        • 2.Rh7#
      • 1...Qf7
        • 2.Rxf7#
      • 1...Qe8
        • 2.Rh7#
        • 2.Rxe8#
      • 1...Qg8
        • 2.Rh7#
      • 1...Qh8
        • 2.Rh7#
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(c);CHECK,OGATE,XR(F)::QAB(E),XQ(c)
    • Q(c);CHECK,N_PINR(F),OGATE,XP(D)::QAR2(E),XQ(c)
    • Q(c);N_PINR(F)::R(F)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,N_PINR(F),OGATE,XP(D)::QAR2(E),XQ(c)
        • Q(c);N_PINR(F)::QAR(E)
        • Q(c);N_PINR(F)::QAB(E)
      • Refutation
        • Q(c);CHECK,XR(F)
    • Try
      • Q(E);N_SPINR(F)
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);OGATE,P_PINQ(E),XR(F)::QAB(E),XQ(c)
        • Q(c);::QAB(E)
        • Q(c);::QAR1(E)
      • Refutation
        • Q(c);CHECK,XP(D)
  • Actual
    • Q(E);
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XR(F)::QAB(E),XQ(c)
      • Q(c);CHECK,N_PINR(F),XP(D)::QAB(E)+R(F)
      • Q(c);N_PINR(F),XQ(E)::R(F)
      • Q(c);N_PINR(F)::QAB(E)+R(F)
      • Q(c);N_PINR(F)::QAB(E)+R(F),XQ(c)
      • Q(c);N_PINR(F)::QAB(E)+R(F),DCHECK
      • Q(c);N_PINR(F)::R(F)
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