MESON Chess Problem Database

Problem Display
PID: 145672 (5b2/1Q6/1P4R1/3rkP1K/8/5R2/5N2/6B1 w - - 0 1)

Laws, Benjamin Glover

Source?, 0000

5b2/1Q6/1P4R1/3rkP1K/8/5R2/5N2/6B1

#2

8 + 3

15 British Chess Magazine 1900

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rd2
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rd3
      • 2.Sxd3#
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rd4
      • 2.Re6#
    • 1...Ra5
      • 2.Sd3#
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rb5
      • 2.Sd3#
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rc5
      • 2.Sd3#
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rd6
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rd7
      • 2.Sg4#
      • 2.Qe4#
    • 1...Rd8
      • 2.Sg4#
      • 2.Qe4#
    • 1...Ba3
      • 2.Qg7#
    • 1...Bb4
      • 2.Qg7#
    • 1...Bc5
      • 2.Qg7#
    • 1...Bd6
      • 2.Qg7#
    • 1...Bg7
      • 2.Qxg7#
  • Tries
    • 1.Sd3+?
      • 1...Rxd3
        • 2.Re6#
      • 1...Ke4!
    • 1.Qc7+?
      • 1...Kd4
        • 2.Rd3#
        • 2.Rg4#
        • 2.Qc3#
      • 1...Bd6
        • 2.Qg7#
      • 1...Rd6!
    • 1.Qe7+?
      • 1...Kd4
        • 2.Rg4#
      • 1...Bxe7!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qxd5#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kxd6
        • 2.Qc7#
      • 1...Rxd6
        • 2.Sg4#
      • 1...Bxd6
        • 2.Qg7#
      • 1...Rd1
        • 2.Bh2#
      • 1...Rd2
        • 2.Bh2#
      • 1...Rd3
        • 2.Bh2#
      • 1...Rd4
        • 2.Re6#
      • 1...Ra5
        • 2.Bh2#
      • 1...Rb5
        • 2.Bh2#
      • 1...Rc5
        • 2.Bh2#

This is a version of 4717

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(a);SBLOCK::R1(G)
    • B(c);N_GUARD::QAB(H)
    • B(c);N_GUARD::QAB(H),XB(c)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • R(a);XS(B)::R1(G)
      • Refutation
        • K(b);P-FLIGHT,P_PINP(D),P_SPINR(a)
    • Try
      • Q(H);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB(H)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);P_PINP(D),S_FLIGHT::R(G)
      • Refutation
        • B(c);XQ(H)
  • Actual
    • R(G);
    • Threat
      • QAR1(H),XR(a)
    • Vars
      • K(b);P_PINP(D),P_SPINR(a),S_FLIGHT::QAR1(H),XR(a)
      • K(b);OGATEB,P_PINP(D),S_FLIGHT,XR(G)::QAB1(H)
      • R(a);SBLOCK,XR(G)::S(B)
      • B(c);N_GUARD,SBLOCK,XR(G)::QAB(H)
      • R(a);::B(A)
      • R(a);SBLOCK::R1(G)
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