MESON Chess Problem Database

Problem Display
PID: 180699 (4R3/3Bn2b/5p2/2B1p3/1N1Pk3/2R1p1P1/6K1/8 w - - 0 1)

Basisty, Mark Borisovich

Novitski, Petr Adrinovich

Tkachenko, Sergiy Ivanovich

Die Schwalbe, 2018

4R3/3Bn2b/5p2/2B1p3/1N1Pk3/2R1p1P1/6K1/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Bc6#
    • 1...exd4
      • 2.Rxe7#
  • Tries
    • 1.Rc4?
      • threat
        • 2.d5#
      • 1...exd4
        • 2.Rxe7#
      • 1...Sd5
        • 2.dxe5#
      • 1...Sf5
        • 2.Bc6#
      • 1...Sc6!
    • 1.d5?
      • threat
        • 2.Rxe3#
        • 2.Rc4#
      • 1...Sxd5
        • 2.Rc4#
      • 1...Sc6
        • 2.Rxe3#
      • 1...e2
        • 2.Re3#
        • 2.Rc4#
      • 1...Sf5!
  • Keys
    • 1.dxe5!
      • threat
        • 2.Rxe3#
      • 1...Kxe5
        • 2.Rxe7#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sf5
        • 2.Bc6#
      • 1...e2
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(e);N_GUARD,P_SPINP(c),SBLOCK::B(G)
    • P(c);OGATEB,P_SPINS(e),XP(E)::R(H),XS(e)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)+P(E)
      • Vars
        • P(c);OGATEB,P_SPINP(c),P_SPINS(e),XP(E)::R(H),XS(e)
        • S(e);P_SPINP(c)::R(B)+P(E),XP(c)
        • S(e);N_GUARD,P_SPINP(c),SBLOCK::B(G)
      • Refutation
        • S(e);P_SPINP(c)
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);P_SPINP(c),XP(E)::R(B)
        • S(e);P_SPINP(c)::R1(B),XP(a)
      • Refutation
        • S(e);P_SPINP(c)
  • Actual
    • P(E);XP(c)
    • Threat
      • R1(B),XP(a)
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINS(e),XP(E)::R(H),XS(e)
      • S(e);::R(B)
      • S(e);N_GUARD,SBLOCK::B(G)
      • P(a);::R1(B)
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