MESON Chess Problem Database

Problem Display
PID: 29034 (5Q2/8/8/8/8/5p2/2N1Np2/2K2k2 w - - 0 1)

Achbar, Selim

Apprenti Sorcier, 1994

5Q2/8/8/8/8/5p2/2N1Np2/2K2k2

#2

4 + 3

3248 Miniatures canadiennes 2000
5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa8?
      • 1...Kxe2
        • 2.Qa6#
      • 1...fxe2
        • 2.Qh1#
      • 1...Kg2!
    • 1.Qg8?
      • 1...Kxe2
        • 2.Qc4#
      • 1...fxe2!
    • 1.Qh8?
      • 1...Kg2
        • 2.Se3#
      • 1...fxe2
        • 2.Qh1#
      • 1...Kxe2!
  • Keys
    • 1.Qh6!
      • 1...Kxe2
        • 2.Qa6#
      • 1...Kg2
        • 2.Se3#
      • 1...fxe2
        • 2.Qh1#

Anticipated by 2180(1900), 9679(1908)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB(D)
        • P(c);OGATE,SBLOCK,XS(C)::QAR2(D)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB(D)
      • Refutation
        • P(c);XS(C)
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::S(B)
        • P(c);SBLOCK,XS(C)::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • Q(D);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB(D)
      • K(a);S_FLIGHT::S(B)
      • P(c);SBLOCK,XS(C)::QAR2(D)
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