MESON Chess Problem Database

Problem Display
PID: 109679 (rb6/5p2/8/5B2/3B4/1Q5K/1P6/k7 w - - 0 1)

Weenink, Henri Gerard Maria

Algemeen Handelsblad, 1917

(First published on Sat Jul 7 1917)

rb6/5p2/8/5B2/3B4/1Q5K/1P6/k7

#2

5 + 4

16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qd1#
    • 1...Ra3
      • 2.Qxa3#
      • 2.bxa3#
    • 1...Ra4
      • 2.Qxa4#
    • 1...Ba7
      • 2.Qa4#
      • 2.Qa3#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qb1#
        • 2.b3#
        • 2.b4#
      • 1...Ra3+
        • 2.bxa3#
        • 2.b3#
      • 1...Ra2
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Ra4
        • 2.Qb1#
        • 2.Qxa4#
        • 2.b4#
      • 1...Be5
        • 2.Qb1#
      • 1...Ba7
        • 2.Qb1#
        • 2.Qa4#
      • 1...Ka2!
    • 1.Qc4?
      • threat
        • 2.b4#
      • 1...Ra3+
        • 2.bxa3#
      • 1...Ra2
        • 2.Qf1#
        • 2.Qc1#
      • 1...Ba7
        • 2.Qa6#
        • 2.Qa4#
      • 1...Be5!
    • 1.Qd3?
      • threat
        • 2.Qb1#
      • 1...Ra3
        • 2.Qxa3#
      • 1...Ka2!
  • Keys
    • 1.Qd5!
      • threat
        • 2.b4#
      • 1...Ra3+
        • 2.bxa3#
      • 1...Ra2
        • 2.Qh1#
      • 1...Be5
        • 2.Qxa8#
      • 1...Ba7
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::QAR(B)
    • R(c);N_GUARD::QAR(B),XR(c)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • B(d);::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • B(D)+P(A)
      • Vars
        • R(c);CHECK,OGATE::B(D)+P(A),XR(c)
      • Refutation
        • B(d);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • R(c);N_GUARD,P_PINQ(B)::QAR2(B),XR(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • B(D)+P(A)
    • Vars
      • R(c);CHECK,OGATE::B(D)+P(A),XR(c)
      • R(c);SBLOCK::QAB1(B)
      • B(d);N_GUARD::QAB(B),XR(c)
      • B(d);S_CUTR(c)::QAR(B)
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