MESON Chess Problem Database

Problem Display
PID: 107746 (8/8/2p5/r2R4/1BpNk1K1/3N4/3n1P2/1B6 w - - 0 1)

Bylevski, Aleksandr

Mezija, 1994

8/8/2p5/r2R4/1BpNk1K1/3N4/3n1P2/1B6

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Sf4#
    • 1...Sb3
      • 2.Sf4#
    • 1...Sf3
      • 2.Sf4#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Rd4#
      • 1...Rxd5
        • 2.Sc5#
      • 1...Sb3
        • 2.Sf4#
      • 1...Sf3
        • 2.Sf4#
      • 1...Kxd5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Sf4#
      • 1...Rxd5
        • 2.Sc5#
      • 1...Sxf3
        • 2.Sf4#
      • 1...cxd5
        • 2.Sc5#
      • 1...Sb3
        • 2.Sf4#
      • 1...c5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::B(A)+S(C)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • R1(G)
      • Vars
        • R(d);SBLOCK,XR(G)::B(A)+S(C),DCHECK
        • S(a);N_GUARD::B(A)+S(C)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
  • Actual
    • S(E);
    • Threat
      • R1(G)
    • Vars
      • K(c);S_FLIGHT,XR(G)::S(C)
      • R(d);SBLOCK,XR(G)::B(A)+S(C),DCHECK
      • S(a);N_GUARD,XS(E)::B(A)+S(C)
      • P(e);SBLOCK,XR(G)::B(A)+S(C),DCHECK
      • S(a);N_GUARD::B(A)+S(C)
      • P(e);S_CUTR(d)::R1(G)
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