MESON Chess Problem Database

Problem Display
PID: 149567 (7Q/2Bn4/1pR1P3/3k1n2/3P1r2/5p2/3N1K2/2R2B2 w - - 0 1)

Shanshin, Valery Yurevich

1st Prize, Shakhmatnaya Poeziya, 2001

7Q/2Bn4/1pR1P3/3k1n2/3P1r2/5p2/3N1K2/2R2B2

#2

9 + 6

15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Rd6#
    • 1...Sg3
      • 2.Rd6#
    • 1...Sxd4
      • 2.Rd6#
    • 1...Sh4
      • 2.Rd6#
    • 1...Sd6
      • 2.Rxd6#
    • 1...Sh6
      • 2.Rd6#
    • 1...Se7
      • 2.Rd6#
    • 1...Sg7
      • 2.Rd6#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sb8
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
  • Tries
    • 1.Rxb6?
      • threat
        • 2.Bc4#
      • 1...Rxd4
        • 2.Qa8#
      • 1...Sxd4
        • 2.Rd6#
      • 1...Sxb6
        • 2.Qe5#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sg7
        • 2.Rd6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Se3
        • 2.Rd6#
      • 1...Sf6!
    • 1.exd7?
      • threat
        • 2.Qe5#
      • 1...Sg7
        • 2.Rd6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Re4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Rd6#
      • 1...Kxd4
        • 2.R6c4#
      • 1...Rxd4
        • 2.Rxb6#
      • 1...Sxd4
        • 2.Bc4#
      • 1...Sd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • S(d);N_GUARD::R1(F)
    • S(d);N_GUARD,XP(E)::R1(F)
    • S(d);N_GUARD::R1(F),XS(d)
    • S(f);N_GUARD::QAR1(I),XS(f)
    • S(f);N_GUARD::QAR1(I)
  • Tries
    • Try
      • R(F);XP(e)
      • Threat
        • B(B)
      • Vars
        • R(b);SBLOCK,XP(E)::QAB(I)
        • S(d);N_GUARD,XP(E)::R1(F)
        • S(f);N_GUARD,XR(F)::QAR1(I)
        • S(d);N_GUARD::R1(F),XS(d)
        • S(d);N_GUARD::R1(F)
        • S(f);N_GUARD::QAR1(I),XS(f)
      • Refutation
        • S(f);
    • Try
      • P(G);XS(f)
      • Threat
        • QAR1(I)
      • Refutation
        • R(b);
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+R(F),DCHECK
    • Vars
      • K(c);P-FLIGHT,XP(E)::R1(F)
      • R(b);SBLOCK,XP(E)::QAB(I)+R(F),XP(e)
      • S(d);SBLOCK,XP(E)::B(B)
      • S(d);::QAB(I)+R(F),DCHECK,XS(d)
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