MESON Chess Problem Database

Problem Display
PID: 4521 (8/8/8/3N2p1/4p1Q1/Rn2Bp2/2b1k1NK/1n1R4 w - - 0 1)

Greenwood, William M

Huddersfield College Magazine, 1874

8/8/8/3N2p1/4p1Q1/Rn2Bp2/2b1k1NK/1n1R4

#2

7 + 7

1693 English Chess Problems 1876

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Re1#
    • 1...Sxa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sa1
      • 2.Re1#
    • 1...Sc1
      • 2.Re1#
    • 1...Sd2
      • 2.Re1#
    • 1...Sd4
      • 2.Re1#
    • 1...Sa5
      • 2.Re1#
    • 1...Sc5
      • 2.Re1#
  • Tries
    • 1.Sgf4+?
      • 1...Kxd1
        • 2.Qg1#
      • 1...gxf4!
    • 1.Qxe4?
      • threat
        • 2.Re1#
      • 1...Kxd1
        • 2.Qxf3#
      • 1...Bxd1
        • 2.Qc4#
      • 1...fxg2
        • 2.Qg4#
      • 1...f2
        • 2.Qg4#
      • 1...Bxe4!
  • Keys
    • 1.Qd7!
      • 1...Kxd1
        • 2.Sc3#
      • 1...Bxd1
        • 2.Qb5#
      • 1...Sxa3
        • 2.Sc3#
      • 1...fxg2
        • 2.Qg4#
      • 1...S1d2
        • 2.Sc3#
      • 1...f2
        • 2.Qg4#
      • 1...Bd3
        • 2.Re1#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sa1
        • 2.Re1#
      • 1...Sc1
        • 2.Re1#
      • 1...S3d2
        • 2.Re1#
      • 1...Sd4
        • 2.Re1#
      • 1...Sa5
        • 2.Re1#
      • 1...Sc5
        • 2.Re1#
      • 1...g4
        • 2.Sdf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::R1(A)
    • S(a);N_GUARD,XR(D)::S(G)
    • S(a);N_GUARD::S(G),XS(a)
    • S(d);::R1(A)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(A)::QAR(F)
      • Refutation
        • P(g);XS(B)
    • Try
      • Q(F);N_PINP(e),XP(f)
      • Threat
        • R1(A)
      • Vars
        • K(c);S_FLIGHT,XR(A)::QAB(F),XP(e)
        • B(b);N_GUARD,SBLOCK,XR(A)::QAB(F)
        • P(e);OGATEB,XS(B)::QAB(F)
        • P(e);OGATEB::QAB(F)
      • Refutation
        • B(b);XQ(F)
  • Actual
    • Q(F);N_PINP(e)
    • Vars
      • K(c);S_FLIGHT,XR(A)::QAR(F)+S(G),DCHECK
      • B(b);N_GUARD,SBLOCK,XR(A)::QAB(F)
      • S(a);N_GUARD,XR(D)::S(G)
      • P(e);OGATEB,XS(B)::QAB(F)
      • S(a);N_GUARD::S(G)
      • P(e);OGATEB::QAB(F)
      • B(b);SBLOCK::R1(A)
      • S(a);N_GUARD::S(G),XS(a)
      • S(d);::R1(A)
      • P(g);N_GUARD::S(G)
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