MESON Chess Problem Database

Problem Display
PID: 84199 (2R5/1N3p2/3P1R1r/1N1kn1pB/n7/3P2B1/8/K7 w - - 0 1)

Drazkowski, Krzysztof

Suomen Shakki, 1993

2R5/1N3p2/3P1R1r/1N1kn1pB/n7/3P2B1/8/K7

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Rc5#
    • 1...Sc3
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sb6
      • 2.Rc5#
    • 1...Sxd3
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
      • 2.Bxf7#
    • 1...Sc4
      • 2.Bf3#
      • 2.Bxf7#
    • 1...Sg4
      • 2.Bxf7#
    • 1...Sc6
      • 2.Bf3#
      • 2.Bxf7#
    • 1...Sg6
      • 2.Bf3#
    • 1...Sd7
      • 2.Bf3#
      • 2.Bxf7#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Rxe5#
      • 1...Re6
        • 2.Bf3#
      • 1...f6
        • 2.Bf7#
      • 1...Ke6!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Sc7#
      • 1...Sxd3
        • 2.Bxf7#
      • 1...Sxc4
        • 2.Bf3#
      • 1...Sc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::R1(I)
    • S(a);N_GUARD::R1(I),XS(a)
    • S(c);N_GUARD,XP(B)::B(E)
    • S(c);N_GUARD::B(E),XP(f)
    • S(c);N_GUARD::B(E)
  • Tries
    • Try
      • R(G);P_PINS(c)
      • Threat
        • R1(G),XS(c)
      • Vars
        • R(e);SBLOCK::B(E)
        • P(f);S_CUTR(e)::B(E)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
  • Actual
    • R(I);
    • Threat
      • S(D)
    • Vars
      • S(c);N_GUARD,XP(B)::B(E),XP(f)
      • S(c);N_GUARD,XR(I)::B(E)
      • S(a);N_GUARD::R1(I),XS(a)
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