MESON Chess Problem Database

Problem Display
PID: 103470 (8/3pp2B/1Kn2p2/1N1k4/3P1R2/1P6/n7/4R3 w - - 0 1)

Bantysh, Nikolai Ivanovich

Phenix, 2004

8/3pp2B/1Kn2p2/1N1k4/3P1R2/1P6/n7/4R3

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.Rxd4#
    • 1...d6
      • 2.Sc7#
    • 1...e5
      • 2.Bg8#
    • 1...e6
      • 2.Be4#
  • Tries
    • 1.Rxe7?
      • threat
        • 2.Be4#
        • 2.Bg8#
      • 1...Sxd4
        • 2.Be4#
        • 2.Rxd4#
      • 1...Sc3
        • 2.Bg8#
      • 1...Se5
        • 2.Be4#
      • 1...Sd8
        • 2.Be4#
        • 2.Rf5#
      • 1...f5
        • 2.Bg8#
      • 1...Sxe7!
    • 1.Rf5+?
      • 1...e5
        • 2.Bg8#
      • 1...Se5!
    • 1.Rxf6?
      • threat
        • 2.Be4#
      • 1...Sxd4
        • 2.Sc7#
      • 1...exf6
        • 2.Bg8#
      • 1...Sc3!
  • Keys
    • 1.Re6!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.Bg8#
      • 1...dxe6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(c);OGATE,XP(C)::R1(D),XS(c)
    • P(e);SBLOCK::S(E)
    • P(f);N_GUARD::B(G)
    • P(f);SBLOCK::B(G)
  • Tries
    • Try
      • R(A);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::B(G)
        • S(c);::B(G)
        • P(d);::B(G)
      • Refutation
        • S(c);XR(A)
    • Try
      • R(D);CHECK
      • Vars
        • P(f);P_SPINP(f)::B(G)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • R(D);XP(d)
      • Threat
        • B(G)
      • Vars
        • S(c);SBLOCK,XP(C)::S(E)
        • P(f);N_GUARD,XR(D)::B(G)
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Threat
      • S(E)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(A)::B(G)
      • P(e);SBLOCK,XR(A)::B(G)
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