MESON Chess Problem Database

Problem Display
PID: 48673 (8/4N3/3pp3/6p1/3k2K1/Q2Prp2/R7/b1B3NB w - - 0 1)

Greenwood, William M

Chess Chips, 1878

8/4N3/3pp3/6p1/3k2K1/Q2Prp2/R7/b1B3NB

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Sxf3#
    • 1...Re2
      • 2.Sxf3#
    • 1...Re5
      • 2.Sxf3#
    • 1...Bb2
      • 2.Bxb2#
    • 1...Bc3
      • 2.Qxd6#
    • 1...f2
      • 2.Sc6#
    • 1...d5
      • 2.Sc6#
  • Tries
    • 1.Qb4+?
      • 1...Kxd3
        • 2.Rd2#
      • 1...Ke5!
  • Keys
    • 1.Re2!
      • 1...Re4+
        • 2.Rxe4#
      • 1...Ke5
        • 2.Qxa1#
      • 1...Rxe2
        • 2.Sxf3#
      • 1...Rxd3
        • 2.Qb4#
      • 1...fxe2
        • 2.Sc6#
      • 1...Bc3
        • 2.Qxd6#
      • 1...Re5
        • 2.Sxf3#
      • 1...Bb2
        • 2.Bxb2#
      • 1...f2
        • 2.Sc6#
      • 1...d5
        • 2.Sc6#
      • 1...e5
        • 2.Bxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::S(B),XP(c)
    • B(a);N_GUARD::B(A),XB(a)
    • B(a);SBLOCK::QAR2(E),XP(f)
    • P(c);::S(H)
    • P(f);SBLOCK::S(H)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(F)::R1(D)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • R(b);CHECK,OGATE::R1(D),XR(b)
      • K(d);P_SPINR(b),S_FLIGHT::QAB(E),XB(a)
      • R(b);N_GUARD,XR(D)::S(B),XP(c)
      • R(b);SBLOCK,XP(F)::QAR2(E)
      • P(c);XR(D)::S(H)
      • B(a);SBLOCK::QAR2(E),XP(f)
      • R(b);N_GUARD::S(B),XP(c)
      • B(a);N_GUARD::B(A),XB(a)
      • P(c);::S(H)
      • P(f);SBLOCK::S(H)
      • P(g);SBLOCK::B(A),XR(b)
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Developed and maintained by Brian Stephenson.
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