MESON Chess Problem Database

Problem Display
PID: 65961 (1q6/n1Bp3p/3P2bP/1p3p2/3k1npN/1B2R3/3P4/2RK3Q w - - 0 1)

Anonymous

The Chess Monthly (Hoffer), 1881

1q6/n1Bp3p/3P2bP/1p3p2/3k1npN/1B2R3/3P4/2RK3Q

#2

10 + 10

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Bxb6#
    • 1...Qa8
      • 2.Bb6#
    • 1...Qe8
      • 2.Bb6#
    • 1...Qf8
      • 2.Bb6#
    • 1...Qg8
      • 2.Bb6#
    • 1...Qh8
      • 2.Bb6#
    • 1...Bh5
      • 2.Sxf5#
    • 1...Bf7
      • 2.Sxf5#
    • 1...Be8
      • 2.Sxf5#
    • 1...Se2
      • 2.Qd5#
    • 1...Sd3
      • 2.Qd5#
    • 1...Sh3
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sh5
      • 2.Qd5#
    • 1...Se6
      • 2.Qd5#
    • 1...g3
      • 2.Sf3#
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Re4+?
      • 1...Kd3
        • 2.Bc2#
        • 2.Rc3#
      • 1...fxe4!
    • 1.Qf3?
      • threat
        • 2.Qxf4#
      • 1...gxf3
        • 2.Sxf3#
      • 1...Qa8
        • 2.Bb6#
      • 1...Qe8
        • 2.Bb6#
      • 1...Se2
        • 2.Qd5#
      • 1...Sg2
        • 2.Qd5#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sh3
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sh5
        • 2.Qd5#
      • 1...Se6
        • 2.Qd5#
      • 1...Qb7!
  • Keys
    • 1.Qa8!
      • 1...Qxc7
        • 2.Qh8#
      • 1...Qxa8
        • 2.Bb6#
      • 1...Qb7
        • 2.Qh8#
      • 1...Qb6
        • 2.Bxb6#
        • 2.Qh8#
      • 1...Qc8
        • 2.Qxa7#
      • 1...Qd8
        • 2.Qxa7#
      • 1...Qe8
        • 2.Bb6#
        • 2.Qxa7#
      • 1...Qf8
        • 2.Bb6#
        • 2.Qxa7#
      • 1...Qg8
        • 2.Bb6#
        • 2.Qxa7#
      • 1...Qh8
        • 2.Bb6#
        • 2.Qxa7#
        • 2.Qxh8#
      • 1...Bh5
        • 2.Sxf5#
      • 1...Bf7
        • 2.Sxf5#
      • 1...Be8
        • 2.Sxf5#
      • 1...Se2
        • 2.Qd5#
      • 1...Sg2
        • 2.Qd5#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sh3
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sh5
        • 2.Qd5#
      • 1...Se6
        • 2.Qd5#
      • 1...Sc6
        • 2.Qa1#
      • 1...Sc8
        • 2.Qa1#
      • 1...g3
        • 2.Sf3#
      • 1...b4
        • 2.Rc4#

Anticipated by 68521(0000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • Q(j);N_GUARD::B(J),XQ(j)
    • Q(j);N_GUARD::B(J)
    • B(f);N_GUARD::S(G),XP(e)
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • P(c);N_GUARD::S(G)
    • P(d);N_GUARD::R1(A)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • P(e);XR(F)
    • Try
      • Q(C);
      • Threat
        • QAR2(C),XS(b)
      • Vars
        • P(c);XQ(C)::S(G),XP(c)
        • Q(j);N_GUARD::B(J)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • Q(j);
  • Actual
    • Q(C);
    • Vars
      • Q(j);OGATE,XB(J)::QAB(C)
      • Q(j);N_GUARD,XQ(C)::B(J)
      • Q(j);OGATE::QAB(C)
      • Q(j);N_GUARD::QAB(C),XS(g)
      • B(f);N_GUARD::S(G),XP(e)
      • S(b);N_GUARD::QAR1(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(g);OGATE::QAB(C)
      • P(c);N_GUARD::S(G)
      • P(d);N_GUARD::R1(A)
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