MESON Chess Problem Database

Problem Display
PID: 222691 (2B5/3R1K2/8/4Nk2/5p2/5p2/5B2/8 w - - 0 1)

Lyons, William Henry

Cincinnati Commercial, 1884

2B5/3R1K2/8/4Nk2/5p2/5p2/5B2/8

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • 1...Ke4
        • 2.Rd4#
      • 1...Kg4
        • 2.Rd5#
      • 1...Kg5!
    • 1.Sc4?
      • 1...Ke4
        • 2.Rd4#
      • 1...Kg4
        • 2.Rd5#
      • 1...Kg5!
    • 1.Sc6?
      • 1...Ke4
        • 2.Rd4#
      • 1...Kg4
        • 2.Rd5#
      • 1...Kg5!
    • 1.Sg6?
      • 1...Ke4
        • 2.Rd4#
      • 1...Kg4
        • 2.Rd5#
      • 1...Kg5!
    • 1.Rd5+?
      • 1...Kg5
        • 2.Sg4#
      • 1...Ke4!
  • Keys
    • 1.Sg4!
      • 1...Ke4
        • 2.Rd4#
      • 1...Kxg4
        • 2.Rd5#
      • 1...Kg5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(c);S_FLIGHT::R1(C)
        • K(c);S_FLIGHT::B(E)+R(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(c);S_FLIGHT::R1(C)
        • K(c);S_FLIGHT::B(E)+R(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(c);S_FLIGHT::R1(C)
        • K(c);S_FLIGHT::B(E)+R(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(c);S_FLIGHT::R1(C)
        • K(c);S_FLIGHT::B(E)+R(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);P-FLIGHT::R(C)+S(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(c);S_FLIGHT::R1(C)
      • K(c);S_FLIGHT,XS(B)::B(E)+R(C)
      • K(c);P-FLIGHT::R(C)
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