MESON Chess Problem Database

Problem Display
PID: 225422 (8/8/5B2/5Np1/2p5/3B4/3kb1KQ/R3NR2 w - - 0 1)

Chiasson, Joseph Emile

Praca, 1991

8/8/5B2/5Np1/2p5/3B4/3kb1KQ/R3NR2

#2

8 + 4

3713 Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf1+
      • 2.Kxf1#
    • 1...Bf3+
      • 2.Kxf3#
    • 1...c3
      • 2.Bxg5#
    • 1...g4
      • 2.Qf4#
      • 2.Qh6#
  • Keys
    • 1.Qd6!
      • 1...Bxf1+
        • 2.Bxf1#
      • 1...Bf3+
        • 2.Sxf3#
      • 1...Bxd3
        • 2.Rf2#
      • 1...cxd3
        • 2.Qb4#
      • 1...Bd1
        • 2.Bxc4#
      • 1...Bg4
        • 2.Bxc4#
      • 1...Bh5
        • 2.Bxc4#
      • 1...c3
        • 2.Bxg5#
      • 1...g4
        • 2.Qf4#

Anticipated by 21367(1918)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(b);CHECK,XR(C)::QAR(E)+K(D),XB(b)
    • B(b);CHECK::QAR(E)+K(D),XB(b)
    • P(c);SBLOCK::B(H),XP(d)
  • Actual
    • Q(E);
    • Vars
      • B(b);CHECK,OGATE,XR(C)::QAR(E)+B(F),XB(b)
      • B(b);CHECK,N_GUARD::S(B),XB(b)
      • B(b);OGATEB,P_SPINB(b),XB(F)::R(C)
      • P(c);N_GUARD,P_SPINP(c),XB(F)::QAB(E)
      • B(b);N_GUARD::QAR(E)+B(F),XP(c)
      • P(c);SBLOCK::B(H),XP(d)
      • P(d);N_GUARD::QAB(E)
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