MESON Chess Problem Database

Problem Display
PID: 40766 (2K1N3/p5pB/P5pP/1nRP1p2/N3k3/4p1P1/2q1P3/BQ2n3 w - - 0 1)

Blake, Percy Francis

Manchester Evening News, 1898

(First published on Sat Jun 25 1898)

2K1N3/p5pB/P5pP/1nRP1p2/N3k3/4p1P1/2q1P3/BQ2n3

#2

12 + 9

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxc2#
    • 1...Sd3
      • 2.Qh1#
    • 1...Sf3
      • 2.Qxc2#
    • 1...Sa3
      • 2.Sd6#
    • 1...Sd6+
      • 2.Sxd6#
    • 1...Sc7
      • 2.Sd6#
    • 1...f4
      • 2.Bxg6#
    • 1...gxh6
      • 2.Sf6#
  • Tries
    • 1.Rc4+?
      • 1...Kxd5
        • 2.Bg8#
      • 1...Sd4!
    • 1.Qxc2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxc2!
    • 1.Qb4+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Qc4!
  • Keys
    • 1.d6!
      • 1...Sxd6+
        • 2.Sxd6#
      • 1...Qxb1
        • 2.Re5#
      • 1...gxh6
        • 2.Sf6#
      • 1...Sc3
        • 2.Qb4#
      • 1...Qd3
        • 2.Re5#
      • 1...Sg2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sf3
        • 2.Qxc2#
      • 1...Sa3
        • 2.Qb7#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sc7
        • 2.Re5#
      • 1...f4
        • 2.Bxg6#
      • 1...g5
        • 2.Bxf5#

There are these versions: 40767

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(B),XQ(b)
    • S(a);N_SPINQ(b),OGATE::QAB(B)
    • S(e);N_GUARD::S(L)
    • S(e);CHECK,N_GUARD::S(L),XS(e)
    • S(e);N_GUARD,N_PINR(F)::S(L)
    • P(f);OGATEB,P_SPINP(g)::B(J),XP(g)
    • P(i);N_GUARD,XP(I)::S(L)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(d);N_SPINQ(b),S_FLIGHT,XP(G)::B(J)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • Q(B);CHECK,N_SPINR(F),XQ(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);CHECK,N_PINQ(b)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR1(B),XS(e)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • P(G);
    • Vars
      • S(e);CHECK,XP(G)::S(L),XS(e)
      • Q(b);N_PINR(F),N_SPINQ(b),XQ(B)::R1(F)
      • P(i);N_GUARD,XP(I)::S(L)
      • S(e);N_GUARD,N_PINR(F)::QAR(B)
      • Q(b);N_PINR(F)::R1(F)
      • S(a);N_GUARD::QAB(B),XQ(b)
      • S(a);N_SPINQ(b),OGATE::QAB(B)
      • S(e);OGATE::QAB(B)
      • S(e);N_GUARD,SBLOCK::S(E)
      • S(e);N_PINR(F)::R1(F)
      • P(f);OGATEB,P_SPINP(g)::B(J),XP(g)
      • P(g);OGATE,P_SPINP(f)::B(J),XP(f)
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