MESON Chess Problem Database

Problem Display
PID: 186726 (4R3/7B/3P1P2/8/1B1PN3/4k3/5R1N/7K w - - 0 1)

Andrade, Barry Jack da Costa

Chess, 1960

4R3/7B/3P1P2/8/1B1PN3/4k3/5R1N/7K

#2

10 + 1

5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • 1...Kd3
        • 2.Sed2#
      • 1...Kf4!
    • 1.Sc3+?
      • 1...Kxd4
        • 2.Rf4#
      • 1...Kxf2!
    • 1.Sg3+?
      • 1...Kxf2
        • 2.Be1#
      • 1...Kxd4!
    • 1.Sc5+?
      • 1...Kxf2
        • 2.Be1#
      • 1...Kxd4!
    • 1.Sg5+?
      • 1...Kxf2
        • 2.Be1#
      • 1...Kxd4!
    • 1.Rf3+?
      • 1...Ke2
        • 2.Sf2#
      • 1...Kxd4!
  • Keys
    • 1.Rf4!
      • 1...Ke2
        • 2.Sf2#
      • 1...Kd3
        • 2.Sd2#
      • 1...Kxd4
        • 2.Sc3#
      • 1...Kxf4
        • 2.Bd2#

Anticipated by 106204(1947)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::B(I)+S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(E)::R(B)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(B)::B(D)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(B)::B(D)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(B)::B(D)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R(J)+S(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT::R(J)+S(F)
      • K(a);P-FLIGHT::B(I)+S(F)
      • K(a);S_FLIGHT,XP(E)::R(B)+S(F)
      • K(a);S_FLIGHT,XR(B)::B(D)
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