MESON Chess Problem Database

Problem Display
PID: 4763 (2B5/4p3/3n4/4p1B1/1NN1k3/1p3npK/bP1R4/7Q w - - 0 1)

Blake, Percy Francis

Manchester Weekly Times, 1890

(First published on Fri Nov 14 1890)

2B5/4p3/3n4/4p1B1/1NN1k3/1p3npK/bP1R4/7Q

#2

8 + 8

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb1#
    • 1...Sf5
      • 2.Bb7#
    • 1...e6
      • 2.Sxd6#
  • Tries
    • 1.Sxa2?
      • threat
        • 2.Sc3#
        • 2.Qb1#
      • 1...Sxc8
        • 2.Qb1#
      • 1...e6
        • 2.Sxd6#
        • 2.Qb1#
      • 1...Sb5
        • 2.Qb1#
      • 1...bxa2!
    • 1.Rd3?
      • threat
        • 2.Sd2#
        • 2.Qxf3#
      • 1...Sxc4
        • 2.Qxf3#
      • 1...Sxc8
        • 2.Qxf3#
      • 1...e6
        • 2.Sxd6#
        • 2.Qxf3#
      • 1...g2!
  • Keys
    • 1.Kg2!
      • 1...Se1+
        • 2.Qxe1#
      • 1...Sh4+
        • 2.Qxh4#
      • 1...Sxd2
        • 2.Qh4#
      • 1...Sxg5
        • 2.Qh4#
      • 1...Sxc4
        • 2.Qh7#
      • 1...Sxc8
        • 2.Qh7#
      • 1...e6
        • 2.Sxd6#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Sg1
        • 2.Qh4#
      • 1...Sh2
        • 2.Qe1#
      • 1...Sd4
        • 2.Qh4#
      • 1...Sb5
        • 2.Qh7#
      • 1...Sf5
        • 2.Bb7#
      • 1...Sb7
        • 2.Qh7#
      • 1...Sf7
        • 2.Qh7#
      • 1...Se8
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • S(g);N_GUARD,SBLOCK::B(H)
    • P(h);N_GUARD::S(F),XS(g)
  • Tries
    • Try
      • S(E);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XB(H)::QAB(A)
        • S(g);::QAB(A)
      • Refutation
        • P(b);XS(E)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XS(F)::QAB1(A),XS(c)
        • S(g);XB(H)::QAB1(A),XS(c)
      • Refutation
        • P(d);N_SPINS(c)
  • Actual
    • K(D);N_PINS(c),S_FLIGHT
    • Vars
      • S(c);CHECK,N_GUARD::QAR(A),XS(c)
      • S(c);N_GUARD,XR(C)::QAR(A)
      • S(c);N_GUARD,XB(G)::QAR(A)
      • S(g);N_GUARD,XS(F)::QAB(A)
      • S(g);N_GUARD,XB(H)::QAB(A)
      • P(h);N_GUARD::S(F),XS(g)
      • B(a);N_GUARD::QAB(A),XB(a)
      • S(c);N_GUARD::QAR(A)
      • S(g);N_GUARD::QAB(A)
      • S(g);N_GUARD,SBLOCK::B(H)
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