MESON Chess Problem Database

Problem Display
PID: 241079 (bn6/B7/1r1p1Q1K/6p1/n7/3Bk2N/2P1P3/1N4q1 w - - 0 1)

Magini, Fabio

Best Problems, 2021

bn6/B7/1r1p1Q1K/6p1/n7/3Bk2N/2P1P3/1N4q1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Qxf2#
    • 1...Qc1
      • 2.Qf2#
    • 1...Qd1
      • 2.Qf2#
    • 1...Qh1
      • 2.Qf2#
    • 1...Qg4
      • 2.Qf2#
    • 1...Sb2
      • 2.Bxb6#
    • 1...Sc3
      • 2.Bxb6#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Qe5+?
      • 1...Be4
        • 2.Qxe4#
      • 1...dxe5+!
    • 1.Qe7+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd4!
    • 1.Qe6+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd4!
  • Keys
    • 1.c3!
      • threat
        • 2.Qd4#
      • 1...Qxb1
        • 2.Qxg5#
      • 1...Sxc3
        • 2.Bxb6#
      • 1...Qg4
        • 2.Qf2#
      • 1...Sc6
        • 2.Qf3#
      • 1...d5
        • 2.Qe6#

There are these afters: 252848

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::QAB1(F),XQ(a)
    • Q(a);N_GUARD::QAB1(F)
    • Q(a);N_GUARD,P_PINS(E)::QAB1(F)
    • S(c);N_GUARD::B(H),XR(e)
    • P(d);N_GUARD::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR1(F),XB(g)
      • Refutation
        • P(f);CHECK,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR1(F),XB(g)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR1(F),XB(g)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Threat
      • QAB1(F)
    • Vars
      • Q(a);N_GUARD,XS(A)::QAB(F),XP(d)
      • S(c);N_GUARD,XP(B)::B(H),XR(e)
      • Q(a);N_GUARD::QAB1(F)
      • S(h);S_CUTB(g)::QAR1(F)
      • P(f);P_PINQ(F),S_CUTB(g)::QAR(F)
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