MESON Chess Problem Database

Problem Display
PID: 96286 (8/7p/p1Q1p2p/R2n2nK/3Pk1PR/3pPp1B/5P2/8 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

The Chess Problem, 1946

8/7p/p1Q1p2p/R2n2nK/3Pk1PR/3pPp1B/5P2/8

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxh3
      • 2.Qxe6#
    • 1...Sf7
      • 2.g5#
    • 1...d2
      • 2.Qc2#
    • 1...e5
      • 2.Qxd5#
  • Tries
    • 1.Kxh6?
      • 1...Sxh3
        • 2.Qxe6#
      • 1...d2
        • 2.Qc2#
      • 1...e5
        • 2.Qxd5#
      • 1...Sf7+!
    • 1.Bf1?
      • 1...Sh3
        • 2.Qxe6#
      • 1...d2
        • 2.Qc2#
      • 1...e5
        • 2.Qxd5#
      • 1...Sf7!
    • 1.Rxa6?
      • 1...Sxh3
        • 2.Qxe6#
      • 1...d2
        • 2.Qc2#
      • 1...Sf7
        • 2.g5#
      • 1...e5!
  • Keys
    • 1.Qb7!
      • 1...Sxh3
        • 2.Qxh7#
      • 1...d2
        • 2.Qb1#
      • 1...Sf7
        • 2.g5#
      • 1...e5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD,XB(C)::QAR2(I),XP(g)
    • S(e);OGATE::R(F)+P(E)
    • P(a);OGATEB::QAB(I)
    • P(g);N_GUARD::QAB1(I),XS(d)
  • Tries
    • Try
      • K(H);P-FLIGHT,XP(h)
      • Vars
        • S(e);N_GUARD,XB(C)::QAR2(I),XP(g)
        • P(a);OGATEB::QAB(I)
        • P(g);N_GUARD::QAB1(I),XS(d)
      • Refutation
        • S(e);CHECK
    • Try
      • B(C);
      • Vars
        • S(e);N_GUARD::QAR2(I),XP(g)
        • P(a);OGATEB::QAB(I)
        • P(g);N_GUARD::QAB1(I),XS(d)
      • Refutation
        • S(e);
    • Try
      • R(G);XP(f)
      • Vars
        • S(e);N_GUARD,XB(C)::QAR2(I),XP(g)
        • P(a);OGATEB::QAB(I)
        • S(e);OGATE::R(F)+P(E)
      • Refutation
        • P(g);
  • Actual
    • Q(I);
    • Vars
      • S(e);N_GUARD,XB(C)::QAB(I),XP(i)
      • P(a);OGATEB::QAB(I)
      • S(e);OGATE::R(F)+P(E)
      • P(g);N_GUARD::QAB1(I),XS(d)
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