MESON Chess Problem Database

Problem Display
PID: 208819 (8/2B5/K7/p2P4/Pkp5/8/1N1R4/1R1B4 w - - 0 1)

Babson, Joseph Ney

Buffalo Globe, 1876

8/2B5/K7/p2P4/Pkp5/8/1N1R4/1R1B4

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Sxc4#
    • 1...Kc3
      • 2.Bxa5#
    • 1...c3
      • 2.Bd6#
  • Tries
    • 1.Kb6?
      • 1...Ka3
        • 2.Sxc4#
      • 1...c3
        • 2.Bd6#
      • 1...Kc3!
    • 1.Ka7?
      • 1...Ka3
        • 2.Sxc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...c3
        • 2.Bd6#
      • 1...Kc5!
    • 1.Kb7?
      • 1...Ka3
        • 2.Sxc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...c3
        • 2.Bd6#
      • 1...Kc5!
    • 1.Sd3+?
      • 1...Ka3
        • 2.Bd6#
        • 2.Ra1#
      • 1...Kc3!
    • 1.Bxa5+?
      • 1...Ka3
        • 2.Sxc4#
        • 2.Ra1#
      • 1...Kc5!
    • 1.Be5?
      • 1...Ka3
        • 2.Sxc4#
      • 1...c3
        • 2.Bd6#
      • 1...Kc5!
    • 1.Bb6?
      • 1...Ka3
        • 2.Sxc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...c3!
    • 1.Ra1?
      • 1...Kc3
        • 2.Bxa5#
      • 1...c3
        • 2.Bd6#
      • 1...Kc5!
    • 1.Rc1?
      • threat
        • 2.Bd6#
      • 1...Kc5
        • 2.Rxc4#
      • 1...Ka3!
  • Keys
    • 1.Bd8!
      • 1...Ka3
        • 2.Sxc4#
      • 1...Kc3
        • 2.Bxa5#
      • 1...Kc5
        • 2.Be7#
      • 1...c3
        • 2.Be7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(C),XP(b)
    • K(a);S_FLIGHT::B(H),XP(c)
    • P(b);SBLOCK::B(H)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C),XP(b)
        • P(b);SBLOCK::B(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(G);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C),XP(b)
        • K(a);S_FLIGHT::B(H),XP(c)
        • P(b);SBLOCK::B(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(G);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C),XP(b)
        • K(a);S_FLIGHT::B(H),XP(c)
        • P(b);SBLOCK::B(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(H);CHECK,XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(H);
      • Vars
        • K(a);S_FLIGHT::S(C),XP(b)
        • P(b);SBLOCK::B(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(H);
      • Vars
        • K(a);S_FLIGHT::S(C),XP(b)
        • K(a);S_FLIGHT::B(H),XP(c)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::B(H),XP(c)
        • P(b);SBLOCK::B(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • B(H)
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::R1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(H);
    • Vars
      • K(a);S_FLIGHT::S(C),XP(b)
      • K(a);S_FLIGHT::B(H),XP(c)
      • K(a);S_FLIGHT::B(H)
      • P(b);SBLOCK::B(H)
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