MESON Chess Problem Database

Problem Display
PID: 184797 (q4br1/3P1N2/2B1k1p1/p5B1/p5K1/8/8/nQ6 w - - 0 1)

Cumpe, Josef

Narodni Politika, 1908

q4br1/3P1N2/2B1k1p1/p5B1/p5K1/8/8/nQ6

#2

6 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.d8S#
    • 1...Qa6
      • 2.d8S#
    • 1...Qa7
      • 2.d8S#
    • 1...Rh8
      • 2.Qxg6#
    • 1...Sc2
      • 2.Qa2#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...Qxc6
        • 2.d8S#
      • 1...Qa6
        • 2.Qd5#
        • 2.d8S#
      • 1...Kxf7!
    • 1.Qxa1?
      • threat
        • 2.Qf6#
        • 2.Qa2#
      • 1...Kxf7
        • 2.Qf6#
      • 1...Qb7
        • 2.Qf6#
        • 2.d8S#
      • 1...Qa6
        • 2.Qf6#
        • 2.d8S#
      • 1...Qb8
        • 2.Qf6#
      • 1...Qd8
        • 2.Qa2#
      • 1...Be7
        • 2.Qa2#
      • 1...Bg7
        • 2.Qa2#
      • 1...Qxc6!
    • 1.Qd1?
      • threat
        • 2.Qd5#
      • 1...Qxc6
        • 2.d8S#
      • 1...Kxf7!
    • 1.Qf1?
      • threat
        • 2.Qc4#
        • 2.Qf6#
      • 1...Qa6
        • 2.Qf6#
        • 2.d8S#
      • 1...Qd8
        • 2.Qc4#
      • 1...Be7
        • 2.Qc4#
      • 1...Bg7
        • 2.Qc4#
      • 1...Qxc6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Bd5#
      • 1...Kxf7
        • 2.d8S#
      • 1...Qxb7
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD::P=S
    • R(h);N_GUARD::QAR2(A),XP(e)
    • S(a);N_GUARD::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);N_GUARD,XB(D)::P=S
      • Refutation
        • K(d);S_FLIGHT,XS(F)
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XS(F)::QAR1(A)
        • Q(f);::QAR1(A)
        • Q(f);::QAB(A)
        • B(g);::QAB(A)
      • Refutation
        • Q(f);XB(D)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • Q(f);N_GUARD,XB(D)::P=S
      • Refutation
        • K(d);S_FLIGHT,XS(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::QAB(A)
        • B(g);::QAB(A)
      • Refutation
        • Q(f);XB(D)
  • Actual
    • Q(A);
    • Threat
      • B(D)
    • Vars
      • K(d);S_FLIGHT,XS(F)::P=S
      • Q(f);N_GUARD,XQ(A)::P=S
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