MESON Chess Problem Database

Problem Display
PID: 107502 (2r5/5RN1/2P2P2/2Knk3/1Np3R1/p2p4/1b2P3/B7 w - - 0 1)

Zilahi, Zoltan

Problemas, 1970

2r5/5RN1/2P2P2/2Knk3/1Np3R1/p2p4/1b2P3/B7

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Sxc6#
    • 1...Bd4+
      • 2.Bxd4#
    • 1...Sxf6
      • 2.Re7#
    • 1...c3
      • 2.Sxd3#
  • Tries
    • 1.Bxb2+?
      • 1...Sc3
        • 2.Bxc3#
      • 1...c3
        • 2.Sxd3#
      • 1...axb2!
    • 1.Re7+?
      • 1...Kxf6
        • 2.Sxd5#
      • 1...Sxe7!
  • Keys
    • 1.exd3!
      • threat
        • 2.Re4#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Bd4+
        • 2.Bxd4#
      • 1...Sxf6
        • 2.Re7#
      • 1...cxd3
        • 2.Sxd3#
      • 1...Sc3
        • 2.d4#
      • 1...Sf4
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(g);CHECK,XP(F)::S(C),XR(g)
    • B(a);CHECK,OGATE::B(A),XB(a)
    • S(e);N_GUARD,SBLOCK,XP(G)::R(H)
    • P(d);N_GUARD,N_SPINB(a)::S(C),XP(c)
  • Tries
    • Try
      • B(A);CHECK,XB(a)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::B(A),XS(e)
        • P(d);P_SPINP(d)::S(C),XP(c)
      • Refutation
        • P(b);XB(A)
    • Try
      • R(H);CHECK
      • Vars
        • K(f);S_FLIGHT,XP(G)::S(C),XS(e)
      • Refutation
        • S(e);XR(H)
  • Actual
    • P(B);XP(c)
    • Threat
      • R1(D)
    • Vars
      • R(g);CHECK,XP(F)::S(C),XR(g)
      • B(a);CHECK,OGATE::B(A),XB(a)
      • S(e);N_GUARD,SBLOCK,XP(G)::R(H)
      • P(d);XP(B)::S(C),XP(d)
      • S(e);N_SPINB(a),S_CUTB(a)::P(B)
      • S(e);SBLOCK::R(D)
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