MESON Chess Problem Database

Problem Display
PID: 230801 (3Q3n/1p5B/1Pb2p2/1n2k2p/2pR1N2/8/6pN/6K1 w - - 0 1)

Greenwood, William M

Leeds Mercury Weekly Supplement, 1883

(First published on Sat Mar 10 1883)

3Q3n/1p5B/1Pb2p2/1n2k2p/2pR1N2/8/6pN/6K1

#2

7 + 9

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Sxf3#
    • 1...Be4
      • 2.Rxe4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bd7
      • 2.Sf3#
    • 1...Be8
      • 2.Sf3#
      • 2.Re4#
      • 2.Qd5#
    • 1...Sa3
      • 2.Qd6#
    • 1...Sc3
      • 2.Qd6#
    • 1...Sxd4
      • 2.Qc7#
      • 2.Qb8#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...h4
      • 2.Sg4#
    • 1...f5
      • 2.Qxh8#
  • Tries
    • 1.Sxh5?
      • threat
        • 2.Qxf6#
      • 1...Ke6
        • 2.Qxf6#
      • 1...f5
        • 2.Qf6#
      • 1...Sxd4!
    • 1.Qe8+?
      • 1...Bxe8
        • 2.Sf3#
      • 1...Kxd4!
  • Keys
    • 1.Qd7!
      • 1...Bxd7
        • 2.Sf3#
      • 1...Sxd4
        • 2.Qc7#
      • 1...Be4
        • 2.Rxe4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...f5
        • 2.Qg7#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Bf3
        • 2.Sxf3#
      • 1...Sa3
        • 2.Qd6#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...Sf7
        • 2.Sg6#
      • 1...c3
        • 2.Sd3#
      • 1...h4
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::S(B),XB(f)
    • B(f);N_GUARD::R1(C),XB(f)
    • B(f);N_GUARD::QAR1(G),XB(f)
    • B(f);N_GUARD::S(B)
    • S(c);N_GUARD::QAB1(G)
    • S(c);N_GUARD::QAB1(G),XS(c)
    • P(e);N_GUARD::S(B)
    • P(g);OGATEB::QAB(G),XS(i)
  • Tries
    • Try
      • S(D);XP(e)
      • Threat
        • QAB1(G),XP(g)
      • Vars
        • K(d);P-FLIGHT::QAR1(G),XP(g)
        • P(g);::QAB1(G)
      • Refutation
        • S(c);XR(C)
    • Try
      • Q(G);CHECK
      • Vars
        • B(f);XQ(G)::S(B)
      • Refutation
        • K(d);S_FLIGHT,XR(C)
  • Actual
    • Q(G);
    • Vars
      • B(f);N_GUARD,XQ(G)::S(B)
      • S(c);N_GUARD,SBLOCK,XR(C)::QAB(G)
      • B(f);N_GUARD::R1(C),XB(f)
      • B(f);N_GUARD::QAR1(G),XB(f)
      • S(c);N_GUARD::QAB1(G),XS(c)
      • P(g);OGATEB::QAB(G)
      • S(i);N_GUARD::S(D),XS(i)
      • B(f);N_GUARD::S(B),XB(f)
      • S(c);N_GUARD::QAB1(G)
      • S(i);N_GUARD::S(D)
      • P(b);N_GUARD::S(D)
      • P(e);N_GUARD::S(B)
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