MESON Chess Problem Database

Problem Display
PID: 44618 (8/3n1Npq/7b/8/4k3/1BP4N/3P4/K4Q2 w - - 0 1)

King-Parks, Thomas

British Chess Bulletin, 1910

8/3n1Npq/7b/8/4k3/1BP4N/3P4/K4Q2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.d3#
    • 1...Bg5
      • 2.Shxg5#
    • 1...Se5
      • 2.Sd6#
  • Tries
    • 1.Sfg5+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Bxg5!
    • 1.Bc4?
      • threat
        • 2.Qd3#
      • 1...Be3
        • 2.d3#
      • 1...Se5
        • 2.Sd6#
      • 1...Sc5!
    • 1.Qe2+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Be3!
    • 1.Qc4+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kf3!
  • Keys
    • 1.Sg1!
      • threat
        • 2.Qf3#
      • 1...Bf4
        • 2.Qb1#
      • 1...Qf5
        • 2.Qc4#
      • 1...Be3
        • 2.d3#
      • 1...Se5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK::P(C)
    • B(b);N_GUARD::S(F),XB(b)
    • S(c);SBLOCK::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • B(b);XS(G)
    • Try
      • B(D);
      • Threat
        • QAB1(B)
      • Vars
        • B(b);SBLOCK::P(C)
        • S(c);SBLOCK::S(G)
      • Refutation
        • S(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(B)
    • Vars
      • B(b);SBLOCK::QAB(B)
      • Q(e);SBLOCK::QAR2(B)
      • B(b);SBLOCK::P(C)
      • S(c);SBLOCK::S(G)
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