MESON Chess Problem Database

Problem Display
PID: 24101 (4K2N/3p1p2/5R1n/1Pn1k3/8/8/B2N1Q1b/8 w - - 0 1)

Locock, Charles Dealtry

Leisure Hour, 1903

4K2N/3p1p2/5R1n/1Pn1k3/8/8/B2N1Q1b/8

#2

7 + 6

6388 ChessMoves 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Sg4
      • 2.Sxf7#
    • 1...Sg8
      • 2.Sxf7#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Qd4#
        • 2.Qe2#
      • 1...Kxf6!
    • 1.Rf5+?
      • 1...Kd6
        • 2.Qxc5#
        • 2.Qxh2#
      • 1...Sxf5!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qf6#
      • 1...Kxd6
        • 2.Qxh2#
      • 1...Bf4
        • 2.Qxc5#
      • 1...Se4
        • 2.Sc4#
      • 1...Se6
        • 2.Rd5#
      • 1...Sg4
        • 2.Sxf7#
      • 1...Sf5
        • 2.Sxf7#
      • 1...Sg8
        • 2.Sxf7#
      • 1...f5
        • 2.Qd4#
      • 1...f6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(C)
    • B(a);N_GUARD::QAB1(C),XB(a)
    • S(d);N_GUARD::S(G),XP(f)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Refutation
        • S(d);XR(E)
  • Actual
    • R(E);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);S_FLIGHT,XR(E)::QAB(C),XB(a)
      • B(a);SBLOCK::QAR2(C),XS(b)
      • S(b);SBLOCK::S(B)
      • S(b);SBLOCK::R1(E)
      • S(d);N_GUARD::S(G),XP(f)
      • P(f);SBLOCK::QAB1(C)
      • P(f);::QAB1(C),XP(f)
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