MESON Chess Problem Database

Problem Display
PID: 118307 (6R1/4K3/4p3/2ppkP2/2R1b2N/1n3ppN/6p1/1Q4B1 w - - 0 1)

Pradignat, Emile Leonard

Haagsche Courant, 1894

6R1/4K3/4p3/2ppkP2/2R1b2N/1n3ppN/6p1/1Q4B1

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.Sxf3#
    • 1...Sa1
      • 2.Qb8#
    • 1...Sc1
      • 2.Qb8#
    • 1...Sd2
      • 2.Qb8#
    • 1...Sd4
      • 2.Qb8#
    • 1...Sa5
      • 2.Qb8#
    • 1...exf5
      • 2.Sg6#
  • Tries
    • 1.Sxf3+?
      • 1...Kxf5
        • 2.Rg5#
      • 1...Bxf3!
    • 1.Bd4+?
      • 1...Sxd4
        • 2.Qb8#
      • 1...cxd4!
    • 1.Qb2+?
      • 1...Sd4
        • 2.Qb8#
      • 1...d4!
  • Keys
    • 1.Sf2!
      • 1...Kf4
        • 2.Sd3#
      • 1...Bxb1
        • 2.Sg4#
      • 1...Bxf5
        • 2.Sxf3#
      • 1...gxf2
        • 2.Bh2#
      • 1...dxc4
        • 2.Qxe4#
      • 1...exf5
        • 2.Sg6#
      • 1...d4
        • 2.Qxe4#
      • 1...Bc2
        • 2.Sg4#
      • 1...Bd3
        • 2.Sxd3#
        • 2.Sg4#
      • 1...Sa1
        • 2.Qb8#
      • 1...Sc1
        • 2.Qb8#
      • 1...Sd2
        • 2.Qb8#
      • 1...Sd4
        • 2.Qb8#
      • 1...Sa5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD,XP(F)::S(E),XP(c)
    • S(b);OGATE::QAB(A)
    • P(i);SBLOCK,XP(F)::S(E)
  • Tries
    • Try
      • S(E);CHECK,XP(c)
      • Vars
        • K(h);P-FLIGHT,P_SPINB(e),XP(F)::R1(H)
      • Refutation
        • B(e);XS(E)
    • Try
      • B(B);CHECK
      • Vars
        • S(b);OGATE,XB(B)::QAB(A)
      • Refutation
        • P(f);XB(B)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);OGATE,P_SPINS(b)::QAB(A)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • S(C);
    • Vars
      • K(h);P_SPINB(e),S_FLIGHT::S(C)
      • B(e);XQ(A)::S(C)
      • B(e);N_GUARD,XP(F)::S(E),XP(c)
      • P(d);OGATEB,XS(C)::B(B)
      • P(g);N_GUARD,XR(D)::QAR1(A),XB(e)
      • P(i);SBLOCK,XP(F)::S(E)
      • P(g);N_GUARD::QAR1(A),XB(e)
      • B(e);::S(C)
      • S(b);OGATE::QAB(A)
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