MESON Chess Problem Database

Problem Display
PID: 250555 (2B1K3/8/8/1p2k2P/1P5P/5p2/1P1n1N2/Q2R1N2 w - - 0 1)

Rowland, Thomas B

English Mechanic and World of Science, 1886

(First published on Fri Jun 18 1886)

2B1K3/8/8/1p2k2P/1P5P/5p2/1P1n1N2/Q2R1N2

#2

10 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.b3#
  • Tries
    • 1.Rxd2?
      • 1...Kf6
        • 2.b3#
      • 1...Kf4!
  • Keys
    • 1.Qc1!
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qc7#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Qc3#
      • 1...Sxf1
        • 2.Qg5#
      • 1...Sb1
        • 2.Qg5#
      • 1...Sb3
        • 2.Qg5#
      • 1...Sc4
        • 2.Qg5#
      • 1...Se4
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(d);N_GUARD,S_FLIGHT::QAB(A)+P(D)
  • Tries
    • Try
      • R(B);XS(a)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB(A)+P(D)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(d);N_GUARD,P_SPINS(a),S_FLIGHT::QAB1(A)
      • K(d);N_GUARD,P_SPINS(a),S_FLIGHT::QAB(A)
      • K(d);N_GUARD,P-FLIGHT,P_SPINS(a)::QAR1(A)
      • K(d);N_GUARD,S_FLIGHT::QAB(A)
      • S(a);OGATE,XS(C)::QAR2(A)
      • S(a);OGATE::QAR2(A)
      • S(a);SBLOCK::S(E)
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