MESON Chess Problem Database

Problem Display
PID: 7624 (2Bn4/1p5p/pPP2pq1/5P2/3NkBp1/1Q2Pp2/2P2p2/4nK2 w - - 0 1)

Poponin, Vladimir Grigorievich

Rychkov, Vladimir Nikolaevich

2nd Prize, Freie Presse, 1992

2Bn4/1p5p/pPP2pq1/5P2/3NkBp1/1Q2Pp2/2P2p2/4nK2

#2

10 + 11

6113 Problemschach-Jahrbuch (1993) 1994
3705 Album Russia (1992-1994) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Bxf5#
    • 1...Sd3
      • 2.cxd3#
    • 1...Se6
      • 2.Qxe6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
        • 2.Sg3#
        • 2.Qc4#
      • 1...Sxc2
        • 2.Sg3#
      • 1...Sxc6
        • 2.Sc3#
        • 2.Sg3#
      • 1...Se6
        • 2.Sg3#
        • 2.Qxe6#
      • 1...Qf7
        • 2.Sc3#
        • 2.Sg3#
      • 1...Qg8
        • 2.Sc3#
        • 2.Sg3#
      • 1...g3
        • 2.Sc3#
        • 2.Qc4#
      • 1...fxe2+!
    • 1.Sxf3?
      • threat
        • 2.Sd2#
      • 1...Kxf3
        • 2.Qd5#
      • 1...Sxf3
        • 2.Qd3#
      • 1...gxf3
        • 2.Qc4#
      • 1...Se6!
    • 1.Sb5?
      • threat
        • 2.Sc3#
        • 2.Sd6#
        • 2.Qc4#
      • 1...Sxc2
        • 2.Sd6#
      • 1...Sxc6
        • 2.Sc3#
        • 2.Sd6#
      • 1...Se6
        • 2.Sd6#
        • 2.Qxe6#
      • 1...Qf7
        • 2.Sc3#
        • 2.Sd6#
      • 1...Qg8
        • 2.Sc3#
        • 2.Sd6#
      • 1...Sf7
        • 2.Sc3#
        • 2.Qc4#
      • 1...axb5!
    • 1.Be6?
      • threat
        • 2.Bd5#
        • 2.Qd5#
      • 1...Qxf5
        • 2.Bxf5#
      • 1...Sxc2
        • 2.Bd5#
        • 2.Qxc2#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Qf7
        • 2.Qd5#
      • 1...Qg8
        • 2.Qd5#
      • 1...bxc6!
    • 1.fxg6?
      • threat
        • 2.Bf5#
      • 1...Se6
        • 2.Qxe6#
      • 1...f5
        • 2.Bxf5#
      • 1...hxg6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc5#
      • 1...Kxf5
        • 2.Qd5#
      • 1...Qxf5
        • 2.Qc4#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Sd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(h);OGATE,XP(G)::B(J),XQ(h)
    • S(a);OGATE::P(B),XS(a)
    • S(k);N_GUARD::QAR2(C),XS(k)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XP(B)::S(E)
      • Refutation
        • P(c);CHECK,XS(E)
    • Try
      • S(E);XP(c)
      • Threat
        • S(E)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAB(C)
        • S(a);N_GUARD,SBLOCK,XS(E)::QAB1(C)
        • P(e);SBLOCK,XS(E)::QAR2(C)
      • Refutation
        • S(k);
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XP(B)::S(E)
      • Refutation
        • P(f);XS(E)
    • Try
      • B(J);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);OGATE,XP(G)::B(J),XQ(h)
        • S(k);OGATE,XB(J)::QAR2(C),XS(k)
        • Q(h);::QAB1(C)
      • Refutation
        • P(i);XP(I)
    • Try
      • P(G);XQ(h)
      • Threat
        • B(J)
      • Vars
        • S(k);N_GUARD::QAR2(C),XS(k)
        • P(g);::B(J),XP(g)
      • Refutation
        • P(j);XP(G)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT,XP(G)::QAR2(C)
      • Q(h);SBLOCK,XP(G)::QAR2(C)
      • S(k);OGATE,XS(E)::QAR2(C),XS(k)
      • S(a);N_GUARD::QAB1(C),XS(a)
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