MESON Chess Problem Database

Problem Display
PID: 44164 (K6B/Q7/3p1N2/1p1PPp2/1Rb1pk1P/5Pn1/4p3/4N3 w - - 0 1)

Studd, Alnod Ernest

The Westminster Papers, 1877

K6B/Q7/3p1N2/1p1PPp2/1Rb1pk1P/5Pn1/4p3/4N3

#2

10 + 8

4817 English Mechanic and World of Science 1884
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5+
      • 2.Sxd5#
    • 1...Sf1
      • 2.Sh5#
    • 1...Sh1
      • 2.Sh5#
    • 1...Sh5
      • 2.Sxh5#
    • 1...exf3
      • 2.Sd3#
  • Tries
    • 1.Sg2+?
      • 1...Kxe5
        • 2.Qa1#
        • 2.f4#
      • 1...Kxf3!
    • 1.Qe3+?
      • 1...Kxe5
        • 2.f4#
      • 1...Kxe3!
  • Keys
    • 1.Qf2!
      • 1...Bxd5+
        • 2.Sxd5#
      • 1...Kxe5
        • 2.f4#
      • 1...exf3
        • 2.Sd3#
      • 1...dxe5
        • 2.Sg2#
        • 2.fxe4#
      • 1...Ba2
        • 2.Sd3#
      • 1...Bb3
        • 2.Sd3#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Sf1
        • 2.Sh5#
      • 1...Sh1
        • 2.Sh5#
      • 1...Sh5
        • 2.Sxh5#
      • 1...e3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,P_SPINP(d),XP(E)::S(G),XB(c)
    • S(b);N_GUARD::S(G)
    • S(b);N_GUARD::S(G),XS(b)
    • P(d);N_GUARD,P_SPINB(c),SBLOCK,XP(B)::S(A)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • K(e);P-FLIGHT,XP(B)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);OGATE,P_SPINP(d),S_FLIGHT,XP(F)::P(B)
      • Refutation
        • K(e);S_FLIGHT,XQ(H)
  • Actual
    • Q(H);
    • Vars
      • B(c);CHECK,P_SPINP(d),XP(E)::S(G),XB(c)
      • K(e);OGATE,S_FLIGHT,XP(F)::P(B)
      • P(d);N_GUARD,P_SPINB(c),P_SPINP(d),XP(B)::S(A)
      • B(c);N_GUARD,P_SPINP(d)::S(A)
      • B(c);N_GUARD,P_SPINP(d)::S(A),XB(c)
      • S(b);N_GUARD::S(G)
      • S(b);N_GUARD::S(G),XS(b)
      • P(d);N_GUARD,P_SPINB(c)::S(A)
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