MESON Chess Problem Database

Problem Display
PID: 182263 (8/3B2K1/8/1N1k1N2/2p5/2Qp1nP1/8/5q2 w - - 0 1)

Bruch, Jochen

Akademische Monatshefte fur Schach, 1906

8/3B2K1/8/1N1k1N2/2p5/2Qp1nP1/8/5q2

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sd2
      • 2.Qd4#
    • 1...Sh2
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sh4
      • 2.Qd4#
    • 1...Se5
      • 2.Qd4#
    • 1...Sg5
      • 2.Qd4#
  • Tries
    • 1.Sc7+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Ke4!
    • 1.Qxc4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxc4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Sc3#
        • 2.Sbd6#
      • 1...Qa1+
        • 2.Sc3#
      • 1...Ke4
        • 2.Sc3#
        • 2.Sbd6#
      • 1...Kc5
        • 2.Sa3#
        • 2.Sc3#
        • 2.Sbd4#
        • 2.Sbd6#
        • 2.Sa7#
        • 2.Sc7#
      • 1...Ke5
        • 2.Sc3#
        • 2.Sbd6#
      • 1...c3
        • 2.Sbd6#
      • 1...Qb1
        • 2.Sc3#
      • 1...Qe1
        • 2.Sc3#
      • 1...Qg1
        • 2.Sc3#
      • 1...Qf2
        • 2.Sc3#
      • 1...Sd4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • S(c);N_GUARD::QAR1(A)
    • S(c);N_GUARD::QAR1(A),XS(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d)::QAR2(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(A);CHECK,XP(d)
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(e);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);CHECK::QAR(A)+S(C),DCHECK
      • P(d);::QAR(A)+S(C)
      • Q(a);::QAR(A)+S(C),DCHECK
      • Q(a);P_PINP(B)::QAR(A)+S(C),DCHECK
      • S(c);::QAR(A)+S(C),DCHECK
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