MESON Chess Problem Database

Problem Display
PID: 75610 (q3B3/1p6/1p5K/8/4R1p1/3PNk1p/8/6Qn w - - 0 1)

Reeves, Alfred Christopher

The Problemist, 2007

q3B3/1p6/1p5K/8/4R1p1/3PNk1p/8/6Qn

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Qg2#
    • 1...g3
      • 2.Bh5#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Qxg4#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...g3
        • 2.Bh5#
      • 1...Qc8!
    • 1.Sf1?
      • threat
        • 2.Sd2#
        • 2.Sh2#
      • 1...Qa5
        • 2.Sh2#
      • 1...Qb8
        • 2.Sd2#
      • 1...h2
        • 2.Sd2#
        • 2.Sxh2#
      • 1...g3
        • 2.Sd2#
        • 2.Bh5#
      • 1...Qa2!
    • 1.Sc2?
      • threat
        • 2.Se1#
        • 2.Sd4#
      • 1...Qa4
        • 2.Se1#
      • 1...Qa5
        • 2.Sd4#
      • 1...Qd8
        • 2.Se1#
      • 1...Qa1!
    • 1.Sc4?
      • threat
        • 2.Sd2#
        • 2.Se5#
      • 1...Qxe8
        • 2.Sd2#
      • 1...Qa1
        • 2.Sd2#
      • 1...Qa2
        • 2.Se5#
      • 1...Qb8
        • 2.Sd2#
      • 1...Qa5!
    • 1.Sxg4?
      • threat
        • 2.Sh2#
        • 2.Se5#
      • 1...Qxe8
        • 2.Sh2#
      • 1...Qa1
        • 2.Sh2#
      • 1...Qa2
        • 2.Se5#
      • 1...Qa5
        • 2.Sh2#
      • 1...h2
        • 2.Sxh2#
        • 2.Se5#
      • 1...Qb8!
    • 1.Sd5?
      • threat
        • 2.Re3#
      • 1...g3
        • 2.Bh5#
      • 1...Qxe8!
    • 1.Sf5?
      • threat
        • 2.Sd4#
        • 2.Sh4#
      • 1...Qa1
        • 2.Sh4#
      • 1...Qa4
        • 2.Sh4#
      • 1...Qd8!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Se1#
        • 2.Sh4#
        • 2.Re3#
      • 1...Kg3
        • 2.Re3#
      • 1...Qxe8
        • 2.Se1#
        • 2.Sh4#
      • 1...hxg2
        • 2.Qe3#
      • 1...Qa1
        • 2.Sh4#
        • 2.Re3#
      • 1...Qa5
        • 2.Sh4#
        • 2.Re3#
      • 1...Qd8
        • 2.Se1#
        • 2.Re3#
      • 1...g3
        • 2.Se1#
        • 2.Sh4#
        • 2.Bh5#

This is a version of 18750

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(c);N_GUARD::QAB1(A)
    • P(d);OGATEB::B(F)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(A),XP(d)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
        • P(d);OGATEB::B(F)
      • Refutation
        • Q(g);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::S(C)
      • Refutation
        • Q(g);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::S(C)
      • Refutation
        • Q(g);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XB(F)::S(C)
        • Q(g);::S(C)
      • Refutation
        • Q(g);
    • Try
      • S(C);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XB(F)::S(C)
        • Q(g);::S(C)
      • Refutation
        • Q(g);
    • Try
      • S(C);
      • Threat
        • R1(D)
      • Vars
        • P(d);OGATEB::B(F)
      • Refutation
        • Q(g);XB(F)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::S(C)
      • Refutation
        • Q(g);
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::R(D)
      • P(c);SBLOCK,XS(C)::QAR1(A)
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