MESON Chess Problem Database

Problem Display
PID: 152162 (5N2/1B2qP2/1Q3R2/K1p1k3/7n/1p2P3/8/8 w - - 0 1)

Bolus, Andrew

Good Companions (May Meredith Ty.), 1915

5N2/1B2qP2/1Q3R2/K1p1k3/7n/1p2P3/8/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Qxd6#
    • 1...Qxf6
      • 2.Qxc5#
    • 1...Qxf8
      • 2.Qe6#
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qxb7
      • 2.Qe6#
    • 1...Qd7
      • 2.Sxd7#
    • 1...Qxf7
      • 2.Qd6#
    • 1...Qe8
      • 2.Qd6#
      • 2.fxe8Q#
      • 2.fxe8R#
    • 1...Sg2
      • 2.Sg6#
    • 1...Sf3
      • 2.Sg6#
    • 1...Sf5
      • 2.Sg6#
    • 1...Sg6
      • 2.Sxg6#
    • 1...b2
      • 2.Qxb2#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Rf5+?
      • 1...Sxf5
        • 2.Sg6#
      • 1...Kxf5!
    • 1.Re6+?
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Kf5!
  • Keys
    • 1.Ka4!
      • 1...Qd7+
        • 2.Sxd7#
      • 1...Qe8+
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Qxf6
        • 2.Qxc5#
      • 1...Qxf8
        • 2.Qe6#
      • 1...Qxb7
        • 2.Qe6#
      • 1...Qxf7
        • 2.Qd6#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Qd8
        • 2.Qe6#
      • 1...Qc7
        • 2.Qe6#
      • 1...Sg2
        • 2.Sg6#
      • 1...Sf3
        • 2.Sg6#
      • 1...Sf5
        • 2.Sg6#
      • 1...Sg6
        • 2.Sxg6#
      • 1...b2
        • 2.Qxb2#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_GUARD::QAB1(C),XQ(e)
    • Q(e);N_GUARD,SBLOCK,XR(D)::QAR2(C),XP(c)
    • Q(e);N_GUARD,XS(G)::QAR1(C)
    • Q(e);N_GUARD::QAR1(C),XQ(e)
    • Q(e);N_GUARD,XB(E)::QAR1(C)
    • Q(e);N_GUARD::S(G),XQ(e)
    • Q(e);N_GUARD,XP(F)::QAB1(C)
    • S(b);N_GUARD::S(G)
    • S(b);N_GUARD::S(G),XS(b)
    • P(a);OGATE::QAB(C),XP(a)
    • P(c);OGATE::QAB1(C)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(b);SBLOCK,XR(D)::S(G)
      • Refutation
        • K(d);P-FLIGHT,XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • Q(e);OGATE,XR(D)::QAR1(C),XQ(e)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • Q(e);CHECK,N_GUARD::S(G),XQ(e)
      • Q(e);CHECK,OGATE::PXQ(e)=Q
      • Q(e);N_GUARD,SBLOCK,XR(D)::QAR2(C),XP(c)
      • Q(e);N_GUARD,XS(G)::QAR1(C)
      • Q(e);N_GUARD,XB(E)::QAR1(C)
      • Q(e);N_GUARD,XP(F)::QAB1(C)
      • Q(e);N_GUARD::QAB1(C),XQ(e)
      • Q(e);N_GUARD::QAR1(C),XQ(e)
      • Q(e);N_GUARD::QAR1(C)
      • S(b);N_GUARD::S(G)
      • S(b);N_GUARD::S(G),XS(b)
      • P(a);OGATE::QAB(C),XP(a)
      • P(c);OGATE::QAB1(C)
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