MESON Chess Problem Database

Problem Display
PID: 89807 (2B3n1/2R3N1/1p1p1PqR/4k3/1Q4p1/2Np4/8/1b4K1 w - - 0 1)

Fomichev, Evgeny Vasilevich

Die Schwalbe, 1998

2B3n1/2R3N1/1p1p1PqR/4k3/1Q4p1/2Np4/8/1b4K1

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qf4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qh5
      • 2.Qe4#
    • 1...Qf7
      • 2.Qe4#
    • 1...Qe8
      • 2.Qe4#
    • 1...Qg5
      • 2.Qe4#
    • 1...Qxf6
      • 2.Qe4#
    • 1...Qxg7
      • 2.Qe4#
    • 1...Sxf6
      • 2.Re7#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Qf4#
      • 1...Qxh5
        • 2.Qe4#
      • 1...Qxf6
        • 2.Qe4#
      • 1...Qxh6
        • 2.Qe4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qg5
        • 2.Qe4#
      • 1...Qf5!
    • 1.Se6?
      • threat
        • 2.Qf4#
      • 1...Kf5
        • 2.Qf4#
      • 1...Kxf6
        • 2.Qf4#
      • 1...Qxf6
        • 2.Qe4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qf5
        • 2.Qd4#
      • 1...Qg5
        • 2.Qe4#
      • 1...Qxh6!
    • 1.Se8?
      • threat
        • 2.Qxd6#
      • 1...Qxe8
        • 2.Qe4#
      • 1...Qxf6
        • 2.Qe4#
      • 1...d5!
    • 1.Rc6?
      • threat
        • 2.Qxd6#
      • 1...Qxf6
        • 2.Qe4#
      • 1...d5
        • 2.Re6#
      • 1...Kxf6!
    • 1.Rd7?
      • threat
        • 2.Qxd6#
      • 1...Kxf6
        • 2.Qf4#
      • 1...Qxf6
        • 2.Qe4#
      • 1...Qxg7
        • 2.Qe4#
      • 1...d5!
    • 1.Qe4+?
      • 1...Kxf6
        • 2.Rxg6#
        • 2.Qf5#
        • 2.Qf4#
      • 1...Qxe4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxf6
        • 2.Qf4#
      • 1...Qe4
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(d);P_SPINQ(g),S_FLIGHT,XP(D)::QAR2(C)
    • Q(g);N_GUARD::QAR1(C),XQ(g)
    • Q(g);N_GUARD::QAR1(C)
    • Q(g);N_GUARD,XP(D)::QAR1(C)
    • Q(g);N_GUARD,XS(G)::QAR1(C)
    • S(h);N_GUARD,SBLOCK,XP(D)::R(F)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(C)
      • Vars
        • Q(g);N_GUARD,XS(G)::QAR1(C)
        • Q(g);N_GUARD,XP(D)::QAR1(C)
        • Q(g);N_GUARD,XR(E)::QAR1(C)
        • Q(g);N_GUARD::QAR1(C),XQ(g)
        • Q(g);N_GUARD::QAR1(C)
      • Refutation
        • Q(g);
    • Try
      • S(G);
      • Threat
        • QAB1(C)
      • Vars
        • K(d);P-FLIGHT::QAR1(C)
        • K(d);P_SPINQ(g),S_FLIGHT,XP(D)::QAR2(C)
        • Q(g);N_GUARD,XP(D)::QAR1(C)
        • Q(g);N_GUARD::QAR1(C),XQ(g)
        • Q(g);SBLOCK::QAB1(C)
        • Q(g);N_GUARD::QAR1(C)
      • Refutation
        • Q(g);XR(E)
    • Try
      • S(G);
      • Threat
        • QAB1(C),XP(f)
      • Vars
        • Q(g);N_GUARD,XS(G)::QAR1(C)
        • Q(g);N_GUARD,XP(D)::QAR1(C)
      • Refutation
        • P(f);
    • Try
      • R(F);
      • Threat
        • QAB1(C),XP(f)
      • Vars
        • Q(g);N_GUARD,XP(D)::QAR1(C)
        • P(f);OGATE::R1(F)
      • Refutation
        • K(d);P_SPINP(f),P_SPINQ(g),S_FLIGHT,XP(D)
    • Try
      • R(F);
      • Threat
        • QAB1(C),XP(f)
      • Vars
        • K(d);P_SPINQ(g),S_FLIGHT,XP(D)::QAR2(C)
        • Q(g);N_GUARD,XP(D)::QAR1(C)
        • Q(g);N_GUARD,XS(G)::QAR1(C)
      • Refutation
        • P(f);
    • Try
      • Q(C);CHECK
      • Refutation
        • Q(g);XQ(C)
  • Actual
    • S(B);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);P-FLIGHT::QAR1(C)
      • K(d);P_SPINQ(g),S_FLIGHT,XP(D)::QAR2(C)
      • Q(g);SBLOCK::QAB1(C),XP(f)
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