MESON Chess Problem Database

Problem Display
PID: 226316 (1qn2nK1/4p3/2Q4P/2pp4/p2PP3/RB3kpP/2b1R1N1/2N5 w - - 0 1)

Salardini, Erio

British Chess Magazine, 1930

1qn2nK1/4p3/2Q4P/2pp4/p2PP3/RB3kpP/2b1R1N1/2N5

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Se1#
    • 1...Qe5
      • 2.Bxc2#
    • 1...Qd6
      • 2.Bxc2#
    • 1...Qa7
      • 2.Bxc2#
    • 1...Qc7
      • 2.Bxc2#
    • 1...Qa8
      • 2.Bxc2#
    • 1...Sb6
      • 2.Bxc2#
    • 1...e5
      • 2.Qf6#
  • Tries
    • 1.Bxd5+?
      • 1...Bb3
        • 2.e5#
      • 1...Bd3
        • 2.Rxd3#
        • 2.e5#
      • 1...Qb3!
    • 1.Qe8?
      • threat
        • 2.Qh5#
      • 1...Qf4
        • 2.Se1#
      • 1...Qe5
        • 2.Bxc2#
      • 1...Sg6!
    • 1.Qe6?
      • threat
        • 2.Qg4#
      • 1...Qf4
        • 2.Se1#
      • 1...Sxe6!
    • 1.Qf6+?
      • 1...Qf4
        • 2.Se1#
        • 2.Sh4#
        • 2.Bxc2#
        • 2.Qxf4#
      • 1...exf6!
    • 1.Qg6?
      • threat
        • 2.Qh5#
        • 2.Qg4#
      • 1...Qf4
        • 2.Se1#
      • 1...Qe5
        • 2.Bxc2#
        • 2.Qg4#
      • 1...Sxg6!
    • 1.Qc7?
      • threat
        • 2.Se1#
        • 2.Sh4#
      • 1...Qxc7
        • 2.Bxc2#
      • 1...Qb4
        • 2.Sh4#
        • 2.Qf4#
      • 1...Sg6
        • 2.Se1#
      • 1...e5
        • 2.Qf7#
      • 1...Sd6!
  • Keys
    • 1.Qxd5!
      • threat
        • 2.Qh5#
      • 1...Qxb3
        • 2.Qf7#
      • 1...Bxb3
        • 2.e5#
      • 1...Qf4
        • 2.Se1#
      • 1...Qe5
        • 2.Bxc2#
      • 1...e5
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(h);SBLOCK::S(C)
    • Q(h);N_GUARD::R(D)+B(E),XB(a)
    • S(i);S_CUTQ(h)::R(D)+B(E),XB(a)
    • P(g);N_GUARD,S_CUTQ(h)::QAR(I)
  • Tries
    • Try
      • B(E);CHECK,XP(f)
      • Vars
        • B(a);P_PINB(E),P_SPINB(a)::B(E)+P(H)
      • Refutation
        • Q(h);P_PINB(E),P_SPINQ(h)
    • Try
      • Q(I);
      • Threat
        • QAB(I)
      • Vars
        • Q(h);SBLOCK::S(C)
        • Q(h);N_GUARD::R(D)+B(E),XB(a)
      • Refutation
        • S(j);
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • Q(h);SBLOCK::S(C)
      • Refutation
        • S(j);XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • P(g);XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);SBLOCK::S(C)
      • Refutation
        • S(j);XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);N_GUARD,XQ(I)::R(D)+B(E),XB(a)
        • S(j);::S(C)
        • P(g);OGATE::QAR(I)
      • Refutation
        • S(i);
  • Actual
    • Q(I);XP(f)
    • Threat
      • QAB(I)
    • Vars
      • Q(h);N_GUARD,P_PINQ(I),P_SPINQ(h),XB(E)::QAR(I)
      • B(a);N_GUARD,P_PINQ(I),P_SPINB(a),XB(E)::QAB(I)+P(H)
      • Q(h);SBLOCK::S(C)
      • Q(h);N_GUARD::R(D)+B(E),XB(a)
      • P(g);S_CUTQ(h)::QAR(I)
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