MESON Chess Problem Database

Problem Display
PID: 142196 (8/7B/4P3/3P1NR1/4kp2/KQ6/1pp1p3/1b3r2 w - - 0 1)

Lane, Henry Fitzgerald William

HM., Hampstead and Highgate Express, 1901

8/7B/4P3/3P1NR1/4kp2/KQ6/1pp1p3/1b3r2

#2

7 + 7

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Se3+?
      • 1...Kf3
        • 2.Sd1#
      • 1...Kd4!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kf3!
    • 1.Qc3?
      • threat
        • 2.Sg3#
        • 2.Sd4#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Se7#
        • 2.Sg7#
      • 1...f3
        • 2.Qd4#
      • 1...Rh1
        • 2.Sg3#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
      • 1...Kxd5!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kxd3!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxd5
        • 2.Sd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Kf3!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Sh4#
      • 1...Rf3+
        • 2.Se3#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kf3
        • 2.Sh4#
      • 1...Kxd5
        • 2.Se3#
      • 1...Ke5
        • 2.Qd4#
      • 1...f3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR(B)+S(D)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB1(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(7)
      • Vars
        • P(g);SBLOCK::QAR1(B)
      • Refutation
        • K(f);S_FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB1(B)
      • Refutation
        • K(f);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR1(B)
        • K(f);S_FLIGHT,XP(C)::R(E)+S(D)
        • K(f);P-FLIGHT::QAB1(B)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • B(G)+S(D)
    • Vars
      • R(b);CHECK,SBLOCK::B(G)+S(D)
      • K(f);S_FLIGHT::QAR1(B)
      • K(f);S_FLIGHT::S(D)
      • K(f);S_FLIGHT,XP(C)::R(E)+S(D),DCHECK
      • K(f);P-FLIGHT::QAB1(B)
      • P(g);SBLOCK::QAR1(B)
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