MESON Chess Problem Database

Problem Display
PID: 241270 (2Q3B1/4p2n/8/1P1NPP2/1p1PkN1b/3R3P/1Kp3P1/2B3n1 w - - 0 1)

Fomichev, Evgeny Vasilevich

Variantim, 2013

2Q3B1/4p2n/8/1P1NPP2/1p1PkN1b/3R3P/1Kp3P1/2B3n1

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.gxf3#
    • 1...b3
      • 2.Sc3#
  • Tries
    • 1.Sf6+?
      • 1...Bxf6
        • 2.Bd5#
      • 1...exf6
        • 2.Bd5#
      • 1...Sxf6!
    • 1.Sxe7?
      • threat
        • 2.Bd5#
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qa8#
      • 1...Bxe7
        • 2.Bd5#
      • 1...Sf6!
    • 1.Qxc2?
      • threat
        • 2.Rd1#
        • 2.Rd2#
      • 1...Kxf5
        • 2.Rg3#
      • 1...b3!
    • 1.Qc6?
      • threat
        • 2.Sxe7#
      • 1...Kxf5
        • 2.Qg6#
      • 1...e6
        • 2.Se7#
      • 1...Sf6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Qxc2#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxf5
        • 2.Bxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE::P(C),XS(a)
    • P(c);N_GUARD::S(I)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • B(e);XS(I)::B(M)
        • P(f);XS(I)::B(M)
      • Refutation
        • S(g);XS(I)
    • Try
      • S(I);XP(f)
      • Threat
        • DUALS(4)
      • Vars
        • B(e);XS(I)::B(M)
      • Refutation
        • S(g);
    • Try
      • Q(L);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XP(K)::QAB(L)+R(D)
      • Refutation
        • P(c);
    • Try
      • Q(L);
      • Threat
        • QAB(L)+S(I),XP(f)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XP(K)::QAB1(L)
        • P(f);::QAB(L)+S(I)
      • Refutation
        • S(g);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(D)::QAB1(L),XP(b)
      • K(d);OGATEB,S_FLIGHT,XS(I)::QAB1(L)
      • K(d);OGATEB,S_FLIGHT,XP(K)::B(M),XS(g)
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