MESON Chess Problem Database

Problem Display
PID: 118314 (b6q/4BP1P/1p6/1P1kp3/1p1rN3/6PB/1NQP4/1K6 w - - 0 1)

Pradignat, Emile Leonard

Kentish Mercury, 1899

b6q/4BP1P/1p6/1P1kp3/1p1rN3/6PB/1NQP4/1K6

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qxh7
      • 2.Sf6#
    • 1...Qb8
      • 2.Sf6#
    • 1...Qc8
      • 2.Sf6#
    • 1...Qd8
      • 2.Sf6#
    • 1...Qe8
      • 2.Sf6#
    • 1...Qf8
      • 2.Sf6#
    • 1...Qg8
      • 2.Sf6#
      • 2.fxg8Q#
      • 2.fxg8B#
    • 1...Rxd2
      • 2.Qc4#
    • 1...Rd3
      • 2.Qxd3#
      • 2.Qc4#
    • 1...Rc4
      • 2.Qxc4#
    • 1...Bc6
      • 2.Qxc6#
    • 1...b3
      • 2.Sc3#
  • Tries
    • 1.Qb3+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...Kxe4!
  • Keys
    • 1.Qc8!
      • 1...Kxe4
        • 2.Bg2#
      • 1...Qxh7
        • 2.Qxa8#
      • 1...Qxc8
        • 2.Sf6#
      • 1...Rxd2
        • 2.Qc4#
      • 1...Rxe4
        • 2.Qd7#
      • 1...Rd3
        • 2.Qc4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Qg7
        • 2.Qxa8#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Qd8
        • 2.Sf6#
      • 1...Qe8
        • 2.Sf6#
      • 1...Qf8
        • 2.Sf6#
      • 1...Qg8
        • 2.Sf6#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...b3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD::S(G),XQ(g)
    • Q(g);N_GUARD,XP(K)::S(G)
    • Q(g);N_GUARD::S(G)
    • R(b);N_GUARD,XP(D)::QAB1(C)
    • R(b);N_GUARD::QAB1(C),XR(b)
    • B(f);N_GUARD::QAB1(C),XB(f)
    • P(a);N_GUARD::S(G)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • K(c);S_FLIGHT,XS(G)
  • Actual
    • Q(C);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(G)::B(F)
      • Q(g);N_GUARD,P_PINS(G),XP(K)::QAB(C),XB(f)
      • Q(g);N_GUARD,XQ(C)::S(G)
      • R(b);N_GUARD,XP(D)::QAB1(C)
      • R(b);SBLOCK,XS(G)::QAR2(C)
      • R(b);N_GUARD::QAB1(C)
      • R(b);N_GUARD::QAB1(C),XR(b)
      • Q(g);N_GUARD::QAB(C),XB(f)
      • Q(g);N_GUARD::S(G),XQ(g)
      • Q(g);N_GUARD::S(G)
      • B(f);N_GUARD::QAB1(C),XB(f)
      • B(f);N_GUARD::QAB(C),XB(f)
      • P(a);N_GUARD::S(G)
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