MESON Chess Problem Database

Problem Display
PID: 190121 (8/K1p5/2p1p3/3p4/3k4/N2P1QB1/N7/8 w - - 0 1)

Lawton, Howard

Pittsburgh Gazette-Times, 1913

8/K1p5/2p1p3/3p4/3k4/N2P1QB1/N7/8

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Sc2#
      • 2.Sb5#
    • 1...e5
      • 2.Bf2#
  • Tries
    • 1.Ka6?
      • 1...c5
        • 2.Sc2#
        • 2.Sb5#
      • 1...e5
        • 2.Bf2#
      • 1...Kc5!
    • 1.Kb7?
      • 1...c5
        • 2.Sc2#
        • 2.Sb5#
      • 1...e5
        • 2.Bf2#
      • 1...Kc5!
    • 1.Ka8?
      • 1...c5
        • 2.Sc2#
        • 2.Sb5#
      • 1...e5
        • 2.Bf2#
      • 1...Kc5!
    • 1.Kb8?
      • 1...c5
        • 2.Sc2#
        • 2.Sb5#
      • 1...e5
        • 2.Bf2#
      • 1...Kc5!
    • 1.Bh2?
      • 1...c5
        • 2.Sc2#
        • 2.Sb5#
      • 1...e5
        • 2.Bg1#
      • 1...Kc5!
    • 1.Be5+?
      • 1...Kc5
        • 2.Qf8#
        • 2.d4#
      • 1...Kxe5!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Qb4#
        • 2.d4#
      • 1...dxe4!
    • 1.Qf4+?
      • 1...Kc5
        • 2.Qb4#
        • 2.d4#
      • 1...Kxd3!
  • Keys
    • 1.Qd1!
      • 1...Ke3
        • 2.Sc2#
      • 1...Kc5
        • 2.d4#
      • 1...c5
        • 2.Sc2#
      • 1...e5
        • 2.Bf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::B(E)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(d);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(d);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(d);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);S_FLIGHT
      • Vars
        • P(d);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • P(d);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XB(E)
    • Try
      • Q(D);CHECK
      • Refutation
        • P(b);XQ(D)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::S(B)
      • K(a);OGATE,S_FLIGHT::P(C)
      • P(c);SBLOCK::S(B)
      • P(d);SBLOCK::B(E)
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