MESON Chess Problem Database

Problem Display
PID: 212253 (8/P1R1n3/p2R4/1k6/8/1K6/8/8 w - - 0 1)

Bulanov, Vladimir

Sachova skladba, 2019

8/P1R1n3/p2R4/1k6/8/1K6/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Rc5#
  • Tries
    • 1.Rd5+?
      • 1...Kb6
        • 2.a8S#
      • 1...Sxd5!
    • 1.Rxe7?
      • threat
        • 2.Re5#
      • 1...Ka5
        • 2.Re5#
      • 1...Kc5!
    • 1.a8Q?
      • threat
        • 2.Qxa6#
      • 1...Ka5
        • 2.Rc5#
        • 2.Qxa6#
      • 1...a5
        • 2.Qb7#
        • 2.Qa6#
        • 2.Qb8#
      • 1...Sc6!
  • Keys
    • 1.a8S!
      • 1...Ka5
        • 2.Rc5#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sf5
        • 2.Rd5#
      • 1...Sg6
        • 2.Rd5#
      • 1...Sc8
        • 2.Rd5#
      • 1...Sg8
        • 2.Rd5#
      • 1...a5
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(D)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::P=S
      • Refutation
        • S(c);XR(B)
    • Try
      • R(D);XS(c)
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(C);
      • Threat
        • QAB1(C),XP(b)
      • Refutation
        • S(c);
  • Actual
    • P(C);
    • Vars
      • K(a);P-FLIGHT::R(D)
      • S(c);N_GUARD::R(B)
      • S(c);N_GUARD::R(B),XS(c)
      • P(b);SBLOCK::R1(B)
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