MESON Chess Problem Database

Problem Display
PID: 174227 (8/2B4N/8/4nq2/3pk1P1/1B2p1P1/K1P1QpP1/8 w - - 0 1)

Buchner, Rudolf

Volkstimme Chemnitz, 1924

8/2B4N/8/4nq2/3pk1P1/1B2p1P1/K1P1QpP1/8

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Sg5#
    • 1...Qd7
      • 2.Sg5#
      • 2.Sf6#
    • 1...Qc8
      • 2.Sg5#
      • 2.Sf6#
    • 1...Qf3
      • 2.Sg5#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qh5
      • 2.Sf6#
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qf7
      • 2.Sg5#
    • 1...Qf8
      • 2.Sg5#
    • 1...Sd3
      • 2.Qxd3#
      • 2.cxd3#
    • 1...Sf3
      • 2.Qd3#
    • 1...Sxg4
      • 2.Qd3#
    • 1...Sc6
      • 2.Qd3#
    • 1...Sg6
      • 2.Qd3#
    • 1...Sd7
      • 2.Qd3#
    • 1...Sf7
      • 2.Qd3#
  • Tries
    • 1.Qf3+?
      • 1...Qxf3
        • 2.Sg5#
      • 1...Sxf3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Bd5#
        • 2.Qd5#
      • 1...Qxg4
        • 2.Qxe5#
      • 1...Sxg4
        • 2.Qd3#
      • 1...e2
        • 2.Qxe2#
      • 1...d3
        • 2.Qd5#
      • 1...Qe6
        • 2.Sg5#
      • 1...Qd7
        • 2.Sg5#
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Qf7
        • 2.Sg5#
        • 2.Qxe5#
      • 1...Sd3
        • 2.Qxd3#
        • 2.Qxf5#
        • 2.cxd3#
      • 1...Sf3
        • 2.Qd3#
        • 2.Qxf5#
      • 1...Sc4
        • 2.Qxf5#
      • 1...Sc6
        • 2.Qd3#
        • 2.Qxf5#
      • 1...Sg6
        • 2.Qd3#
        • 2.Qxf5#
      • 1...Sd7
        • 2.Qd3#
        • 2.Qxf5#
      • 1...Sf7
        • 2.Qd3#
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(f);N_GUARD,P_PINB(E)::S(I)
    • Q(f);N_GUARD::S(I)
    • Q(f);N_GUARD::S(I),XQ(f)
    • S(e);N_GUARD::QAB1(C)
    • S(e);N_GUARD,XP(G)::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Vars
        • Q(f);XQ(C)::S(I)
      • Refutation
        • S(e);XQ(C)
  • Actual
    • Q(C);N_PINP(b)
    • Threat
      • DUALS(2)
    • Vars
      • Q(f);N_GUARD,XP(G)::QAR1(C),XS(e)
      • S(e);N_GUARD,XP(G)::QAB1(C)
      • P(b);OGATEB::QAR2(C),XP(b)
      • P(c);::QAB1(C)
      • Q(f);N_GUARD,P_PINB(E)::S(I)
      • S(e);OGATE::QAB1(C),XQ(f)
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