MESON Chess Problem Database

Problem Display
PID: 42770 (B2Rn3/7b/rN2Q2K/B3Pp1p/R5pr/3PkPN1/2Ppppn1/5q2 w - - 0 1)

Velimirovic, Milan

1st Prize, Wola Gulowska, 2001

B2Rn3/7b/rN2Q2K/B3Pp1p/R5pr/3PkPN1/2Ppppn1/5q2

#2

12 + 13

56 The Problemist 2002
102 Probleemblad 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb6
      • 2.Bxb6#
      • 2.Qxb6#
    • 1...Bg8
      • 2.Sxf5#
    • 1...Sf4
      • 2.Sc4#
    • 1...Sd6
      • 2.exd6#
    • 1...Sf6
      • 2.exf6#
    • 1...gxf3
      • 2.Sd5#
    • 1...f4
      • 2.Sc4#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Sc4#
      • 1...Rxb6
        • 2.Bxb6#
        • 2.Qxb6#
      • 1...gxf3
        • 2.Sd5#
      • 1...Sd6
        • 2.exd6#
      • 1...Rxa8!
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Re4#
      • 1...Rxb6+
        • 2.Bxb6#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...gxf3
        • 2.Qxf3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sd6
        • 2.Sd5#
      • 1...Sf6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(l);N_GUARD::S(D),XP(i)
    • S(e);SBLOCK::S(H)
    • S(m);OGATE::QAR(I)+P(G),XS(m)
    • P(g);SBLOCK,XP(C)::S(H)
    • P(i);SBLOCK::S(H)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • S(H)
      • Vars
        • P(g);SBLOCK,XP(C)::S(H)
        • S(m);OGATE::QAR(I)+P(G),XS(m)
      • Refutation
        • R(k);XB(K)
  • Actual
    • Q(I);P_SPINS(H),XP(i)
    • Threat
      • R1(E)
    • Vars
      • R(k);CHECK,OGATE,XS(H)::B(F),XR(k)
      • B(l);XQ(I)::S(D),XB(l)
      • P(g);OGATE,XP(C)::QAR1(I),XP(g)
      • S(e);N_GUARD::QAB1(I),XS(e)
      • S(m);N_PINS(H)::S(H)
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