MESON Chess Problem Database

Problem Display
PID: 181923 (8/2B5/KppRP3/bpk2p2/2p2N2/2p5/3N4/Q7 w - - 0 1)

Hawkins, Xenophon

British Chess Magazine, 1912

8/2B5/KppRP3/bpk2p2/2p2N2/2p5/3N4/Q7

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qg1#
    • 1...b4
      • 2.Qg1#
  • Tries
    • 1.Rxc6+?
      • 1...Kb4
        • 2.Sd5#
        • 2.Bd6#
      • 1...Kd4
        • 2.Qg1#
      • 1...Kxc6!
    • 1.Rd7?
      • 1...cxd2
        • 2.Bd6#
      • 1...Bb4
        • 2.Bxb6#
        • 2.Qg1#
      • 1...c2
        • 2.Bd6#
      • 1...b4
        • 2.Qg1#
      • 1...Kb4!
    • 1.Rd8?
      • 1...cxd2
        • 2.Bd6#
      • 1...Bb4
        • 2.Bxb6#
        • 2.Qg1#
      • 1...c2
        • 2.Bd6#
      • 1...b4
        • 2.Qg1#
      • 1...Kb4!
  • Keys
    • 1.Rd4!
      • 1...Kb4
        • 2.Sd3#
      • 1...Kxd4
        • 2.Qg1#
      • 1...cxd2
        • 2.Bd6#
      • 1...Bb4
        • 2.Bxb6#
      • 1...c2
        • 2.Bd6#
      • 1...b4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAB(A)
    • P(d);SBLOCK::QAB(A)
  • Tries
    • Try
      • R(E);CHECK,XP(h)
      • Vars
        • K(e);P_SPINP(a),S_FLIGHT::QAB(A)
      • Refutation
        • K(e);P-FLIGHT,XR(E)
    • Try
      • R(E);
      • Vars
        • P(a);XS(B)::B(G)
        • P(a);::B(G)
        • P(d);SBLOCK::QAB(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • P(a);XS(B)::B(G)
        • P(a);::B(G)
        • P(d);SBLOCK::QAB(A)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(e);P_SPINP(b),S_FLIGHT::S(C)
      • K(e);OGATEB,P_SPINP(a),S_FLIGHT,XR(E)::QAB(A)
      • P(a);XS(B)::B(G)
      • B(c);N_GUARD,SBLOCK::B(G),XP(g)
      • P(a);::B(G)
      • P(d);N_GUARD::R1(E),XP(b)
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