MESON Chess Problem Database

Problem Display
PID: 166096 (8/q4p1K/2Q2P2/8/1N6/2B5/1b6/kN6 w - - 0 1)

Andersson, Gunnar

Tidskrift for Schack, 1929

8/q4p1K/2Q2P2/8/1N6/2B5/1b6/kN6

#2

6 + 4

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bxb2+?
      • 1...Kxb1
        • 2.Qc1#
        • 2.Qc2#
      • 1...Kxb2!
  • Keys
    • 1.Sd2!
      • 1...Bxc3
        • 2.Qxc3#
      • 1...Qg1
        • 2.Qa4#
        • 2.Qa6#
      • 1...Qf2
        • 2.Qa4#
        • 2.Qa6#
      • 1...Qe3
        • 2.Qa4#
        • 2.Qa6#
      • 1...Qd4
        • 2.Qa4#
        • 2.Qa6#
      • 1...Qc5
        • 2.Qa4#
      • 1...Qb6
        • 2.Qa4#
      • 1...Qb8
        • 2.Qh1#
        • 2.Qa4#
        • 2.Qa6#
      • 1...Qa2
        • 2.Sc2#
      • 1...Qa3
        • 2.Qh1#
      • 1...Qa4
        • 2.Qxa4#
      • 1...Qa5
        • 2.Qh1#
      • 1...Qa6
        • 2.Qxa6#
      • 1...Qb7
        • 2.Qa4#
      • 1...Qc7
        • 2.Qh1#
        • 2.Qa4#
      • 1...Qd7
        • 2.Qh1#
      • 1...Qe7
        • 2.Qa4#
        • 2.Qa6#
      • 1...Qa8
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK,XB(b)
      • Refutation
        • K(a);S_FLIGHT,XB(B)
  • Actual
    • S(A);
    • Vars
      • B(b);N_SPINB(b),OGATE,XB(B)::QAB(D),XB(b)
      • Q(c);N_GUARD::QAR(D)
      • Q(c);SBLOCK::S(C)
      • Q(c);N_GUARD::QAB1(D)
      • Q(c);N_GUARD::QAR(D),XQ(c)
      • Q(c);OGATEB::QAB(D),XQ(c)
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