MESON Chess Problem Database

Problem Display
PID: 69718 (2n5/2Q2R2/3p2N1/B2K4/6p1/3pk2b/1n6/1rb1NB2 w - - 0 1)

Amirov, Talip Khasanovich

Il Due Mosse, 1962

2n5/2Q2R2/3p2N1/B2K4/6p1/3pk2b/1n6/1rb1NB2

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2+
      • 2.Sxg2#
    • 1...Sb6+
      • 2.Qxb6#
    • 1...Sa7
      • 2.Qb6#
      • 2.Qxa7#
      • 2.Qe7#
    • 1...Se7+
      • 2.Qxe7#
    • 1...d2
      • 2.Sc2#
    • 1...g3
      • 2.Rf3#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Bg2+
        • 2.Sxg2#
      • 1...Sb6+
        • 2.Qxb6#
      • 1...Se7+
        • 2.Qxe7#
      • 1...Bxf1
        • 2.Qe5#
        • 2.Qe6#
      • 1...Sa4
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Sc4
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qc5#
      • 1...g3
        • 2.Rf3#
        • 2.Qxg3#
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sxd6!
    • 1.Qd8?
      • threat
        • 2.Qg5#
      • 1...Bg2+
        • 2.Sxg2#
      • 1...Sb6+
        • 2.Qxb6#
      • 1...Se7+
        • 2.Qxe7#
      • 1...Bxf1!
    • 1.Qxc1+?
      • 1...d2
        • 2.Sc2#
        • 2.Bxd2#
        • 2.Qxd2#
      • 1...Rxc1!
    • 1.Qa7+?
      • 1...Sb6+
        • 2.Qxb6#
      • 1...Sxa7!
    • 1.Qxc8?
      • threat
        • 2.Qe6#
        • 2.Qe8#
      • 1...Bg2+
        • 2.Sxg2#
      • 1...g3
        • 2.Rf3#
      • 1...Sc4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qf2#
      • 1...Bg2+
        • 2.Sxg2#
      • 1...Sb6+
        • 2.Bxb6#
      • 1...Se7+
        • 2.Rxe7#
      • 1...dxc2
        • 2.Sxc2#
      • 1...Bd2
        • 2.Bxd2#
        • 2.Qxd2#
      • 1...Sd1
        • 2.Qxd3#
      • 1...d2
        • 2.Qe4#
      • 1...g3
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);CHECK,N_GUARD::S(A),XB(f)
    • S(i);CHECK,N_GUARD::QAB(F),XS(i)
    • S(i);CHECK,N_GUARD::QAR(F),XS(i)
    • P(d);N_GUARD::S(A)
    • P(g);N_GUARD::R1(G)
  • Tries
    • Try
      • Q(F);XP(h)
      • Threat
        • DUALS(5)
      • Vars
        • B(f);CHECK,N_GUARD::S(A),XB(f)
        • S(i);CHECK,N_GUARD::QAB(F),XS(i)
        • S(i);CHECK,N_GUARD::QAR(F),XS(i)
      • Refutation
        • S(i);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • B(f);CHECK,N_GUARD::S(A),XB(f)
        • S(i);CHECK,N_GUARD::QAB(F),XS(i)
        • S(i);CHECK,N_GUARD::QAR(F),XS(i)
      • Refutation
        • B(f);XB(B)
    • Try
      • Q(F);CHECK,XB(b)
      • Refutation
        • R(a);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • S(i);CHECK,N_GUARD,P_SPINS(i)::QAB(F),XS(i)
      • Refutation
        • S(i);XQ(F)
    • Try
      • Q(F);XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);CHECK,N_GUARD::S(A),XB(f)
        • P(g);N_GUARD::R1(G)
      • Refutation
        • S(c);
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • B(f);CHECK,N_GUARD::S(A),XB(f)
      • S(i);CHECK,N_GUARD::B(C),XS(i)
      • S(i);CHECK,N_GUARD::R(G),XS(i)
      • P(d);XQ(F)::S(A),XP(d)
      • S(c);N_GUARD::QAR1(F),XP(d)
      • P(d);OGATE::QAR1(F)
      • P(g);N_GUARD::R1(G)
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