MESON Chess Problem Database

Problem Display
PID: 86593 (5B2/3R1PK1/4pPp1/1p1Pk2p/r3N2N/2P1P3/5PQb/1b4n1 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Slovensky Dennik, 1992

5B2/3R1PK1/4pPp1/1p1Pk2p/r3N2N/2P1P3/5PQb/1b4n1

#2

12 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.cxd4#
    • 1...Rxe4
      • 2.Qg5#
    • 1...Bxe4
      • 2.Qxh2#
    • 1...exd5
      • 2.Re7#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Sxg6#
        • 2.Qxe6#
      • 1...Bxe4
        • 2.Qxe6#
      • 1...exd5
        • 2.Sxg6#
        • 2.Bd6#
        • 2.Re7#
      • 1...Bf4
        • 2.Qxe6#
        • 2.Qxf4#
      • 1...Ra6
        • 2.Sxg6#
      • 1...g5
        • 2.Sg6#
        • 2.Qxe6#
      • 1...hxg4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Bd6#
      • 1...exd5
        • 2.Qxd5#
      • 1...Re4
        • 2.Sxg6#
      • 1...Ra6
        • 2.f4#
      • 1...Be4
        • 2.f4#
      • 1...Sf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATE::P(C),XR(d)
    • R(d);SBLOCK,XS(E)::QAR2(B)
    • B(a);SBLOCK,XS(E)::QAB(B),XB(c)
    • P(h);OGATEB,SBLOCK,XP(G)::R(I)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);SBLOCK,XS(E)::QAR1(B),XP(h)
        • R(d);::S(F),XP(i)
      • Refutation
        • P(g);XQ(B)
  • Actual
    • S(E);
    • Threat
      • B(L)
    • Vars
      • P(h);OGATE,XP(G)::QAR1(B),XP(h)
      • R(d);S_CUTB(a)::S(F),XP(i)
      • R(d);N_GUARD::P(A)
      • B(a);S_CUTR(d)::P(A)
      • S(b);N_GUARD::S(F),XS(b)
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