MESON Chess Problem Database

Problem Display
PID: 263456 (5q1n/3p1P2/Q2p1k1P/1pR3N1/1p5B/3B4/1K6/4R3 w - - 0 1)

Suvorov, Ivan

Zadachi i Etyudi, 2009

5q1n/3p1P2/Q2p1k1P/1pR3N1/1p5B/3B4/1K6/4R3

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qe7
      • 2.Rf1#
    • 1...Qg7
      • 2.Qxd6#
    • 1...Qxf7
      • 2.Sf3#
      • 2.Sh3#
      • 2.Se6#
      • 2.Sh7#
    • 1...Qa8
      • 2.Qxd6#
    • 1...Qc8
      • 2.Qxd6#
    • 1...Qd8
      • 2.Qxd6#
    • 1...Qe8
      • 2.fxe8S#
    • 1...Qg8
      • 2.Qxd6#
      • 2.fxg8S#
    • 1...Sg6
      • 2.Rf5#
    • 1...Sxf7
      • 2.Sh7#
  • Tries
    • 1.Kb1?
      • threat
        • 2.Qa1#
      • 1...Sxf7
        • 2.Sh7#
      • 1...Qe7
        • 2.Rf1#
      • 1...Qa8
        • 2.Qxd6#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Sg6
        • 2.Rf5#
      • 1...b3!
    • 1.Kc1?
      • threat
        • 2.Qa1#
      • 1...Sxf7
        • 2.Sh7#
      • 1...Qe7
        • 2.Rf1#
      • 1...Qa8
        • 2.Qxd6#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Sg6
        • 2.Rf5#
      • 1...b3!
    • 1.Kc2?
      • threat
        • 2.Qa1#
      • 1...Sxf7
        • 2.Sh7#
      • 1...Qe7
        • 2.Rf1#
      • 1...Qa8
        • 2.Qxd6#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Sg6
        • 2.Rf5#
      • 1...b3+!
    • 1.Bf2?
      • threat
        • 2.Bd4#
      • 1...Sxf7
        • 2.Sh7#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Sg6
        • 2.Rf5#
      • 1...Qe7!
    • 1.Qc6?
      • threat
        • 2.Qf3#
      • 1...dxc6
        • 2.Re6#
      • 1...Qa8
        • 2.Qxd6#
      • 1...Sg6
        • 2.Rf5#
      • 1...Qxh6!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Qa1#
      • 1...Qxf7+
        • 2.Se6#
      • 1...Sxf7
        • 2.Sh7#
      • 1...Qe7
        • 2.Rf1#
      • 1...Qa8
        • 2.Qxd6#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Sg6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(f);SBLOCK::R(A)
    • Q(f);N_GUARD::QAR2(G),XP(c)
    • Q(f);OGATE::PXQ(f)=S
    • S(g);SBLOCK::R1(E)
    • S(g);SBLOCK,XP(I)::B(D)+S(F),DCHECK
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • S(g);SBLOCK,XP(I)::B(D)+S(F),DCHECK
        • Q(f);SBLOCK::R(A)
        • Q(f);N_GUARD::QAR2(G),XP(c)
        • Q(f);OGATE::PXQ(f)=S
        • S(g);SBLOCK::R1(E)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • S(g);SBLOCK,XP(I)::B(D)+S(F),DCHECK
        • Q(f);SBLOCK::R(A)
        • Q(f);N_GUARD::QAR2(G),XP(c)
        • Q(f);OGATE::PXQ(f)=S
        • S(g);SBLOCK::R1(E)
      • Refutation
        • P(a);
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • S(g);SBLOCK,XP(I)::B(D)+S(F),DCHECK
        • Q(f);SBLOCK::R(A)
        • Q(f);N_GUARD::QAR2(G),XP(c)
        • Q(f);OGATE::PXQ(f)=S
        • S(g);SBLOCK::R1(E)
      • Refutation
        • P(a);CHECK
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • S(g);SBLOCK,XP(I)::S(F)
        • Q(f);OGATE::PXQ(f)=S
        • S(g);SBLOCK::R1(E)
      • Refutation
        • Q(f);
    • Try
      • Q(G);
      • Threat
        • QAR(G)
      • Vars
        • P(e);N_GUARD,N_SPINP(c),XQ(G)::R1(A)
        • Q(f);N_GUARD::QAR2(G),XP(c)
        • S(g);SBLOCK::R1(E)
      • Refutation
        • Q(f);XP(H)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAB(G)
    • Vars
      • Q(f);CHECK,SBLOCK,XP(I)::B(D)+S(F)
      • S(g);SBLOCK,XP(I)::B(D)+S(F),DCHECK
      • Q(f);SBLOCK::R(A)
      • Q(f);N_GUARD::QAR2(G),XP(c)
      • Q(f);OGATE::PXQ(f)=S
      • S(g);SBLOCK::R1(E)
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