MESON Chess Problem Database

Problem Display
PID: 47410 (3KR2Q/2p5/2p5/2p5/2N1P3/1B1kP3/5R2/Bn1r1n1b w - - 0 1)

Shanshin, Valery Yurevich

2nd Prize, Slovakian Ty., 1987-1989

3KR2Q/2p5/2p5/2p5/2N1P3/1B1kP3/5R2/Bn1r1n1b

#2

9 + 8

4827 FIDE Album (1989-1991) 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Sbd2
      • 2.Qc3#
    • 1...Sa3
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sxe3
      • 2.Sb2#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Sb2#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Rd2!
    • 1.Qb2?
      • threat
        • 2.Qc2#
        • 2.Qe2#
      • 1...Sxe3
        • 2.Qe2#
      • 1...Rc1
        • 2.Qe2#
      • 1...Re1
        • 2.Qc2#
      • 1...Bf3
        • 2.Qc2#
      • 1...Sbd2
        • 2.Qc3#
        • 2.Qc2#
      • 1...Sa3
        • 2.Qc3#
        • 2.Qe2#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qc2#
      • 1...Sfd2
        • 2.Qc2#
      • 1...Sg3
        • 2.Qc2#
      • 1...Rd2!
    • 1.Qg7?
      • threat
        • 2.Qd7#
      • 1...Sxe3
        • 2.Sb2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bxe4!
    • 1.Qh7?
      • threat
        • 2.Qd7#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Sxe3
        • 2.Se5#
      • 1...Sc3!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qd7#
      • 1...Bxe4
        • 2.Se5#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Sc3
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAR1(I)
    • S(a);N_GUARD::QAR1(I),XS(a)
    • S(c);SBLOCK,XP(D)::S(E)
  • Tries
    • Try
      • B(A);
      • Threat
        • S(E)
      • Vars
        • P(f);OGATE,XB(A)::QAR1(I),XP(f)
      • Refutation
        • R(b);
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(D)::QAB1(I)
        • R(b);::QAB1(I)
        • B(d);::QAB1(I)
        • S(c);::QAB1(I)
      • Refutation
        • R(b);
    • Try
      • Q(I);
      • Threat
        • QAR(I)
      • Vars
        • S(c);SBLOCK,XP(D)::S(E)
        • S(a);N_GUARD::QAR1(I),XS(a)
      • Refutation
        • B(d);XP(F)
    • Try
      • Q(I);
      • Threat
        • QAR(I)
      • Vars
        • B(d);OGATE,P_SPINB(d),XP(F)::QAB1(I),XB(d)
        • S(c);SBLOCK,XP(D)::S(E)
      • Refutation
        • S(a);
  • Actual
    • Q(I);
    • Threat
      • QAR(I)
    • Vars
      • B(d);SBLOCK,XP(F)::S(E)
      • S(c);OGATE,P_SPINS(c),XP(D)::QAR1(I),XS(c)
      • S(a);SBLOCK::S(E)
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