MESON Chess Problem Database

Problem Display
PID: 18912 (8/6p1/5p1b/1p1np3/1R3n2/BNkP1b1Q/8/1KN5 w - - 0 1)

Barnes, Barry Peter

Il Due Mosse, 1959

8/6p1/5p1b/1p1np3/1R3n2/BNkP1b1Q/8/1KN5

#2

7 + 9

3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Sa2#
    • 1...Bh1
      • 2.Sa2#
    • 1...Be2
      • 2.Sa2#
    • 1...Bg2
      • 2.Sa2#
    • 1...Be4
      • 2.Sa2#
    • 1...Bg4
      • 2.Sa2#
    • 1...Bh5
      • 2.Sa2#
    • 1...Sxd3
      • 2.Sa2#
    • 1...Sxb4
      • 2.Bb2#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Bb2#
        • 2.Rc5#
      • 1...Se6
        • 2.Bb2#
      • 1...Se3
        • 2.Bb2#
        • 2.Bb4#
      • 1...Sb6
        • 2.Bb2#
        • 2.Bb4#
      • 1...Sxd3!
    • 1.Qf1?
      • threat
        • 2.Sa2#
        • 2.Qe1#
      • 1...Sxd3
        • 2.Sa2#
        • 2.Qxd3#
      • 1...Sxb4
        • 2.Bb2#
        • 2.Qe1#
      • 1...Be2
        • 2.Qe1#
      • 1...Sg2
        • 2.Sa2#
      • 1...Sh3
        • 2.Sa2#
      • 1...Sh5
        • 2.Sa2#
      • 1...Se6
        • 2.Sa2#
      • 1...Sg6
        • 2.Sa2#
      • 1...Se2!
    • 1.Qd7?
      • threat
        • 2.Qc6#
      • 1...Sxd3
        • 2.Sa2#
      • 1...Sxb4
        • 2.Bb2#
      • 1...Se3
        • 2.Sa2#
      • 1...Sb6
        • 2.Sa2#
      • 1...Sc7
        • 2.Sa2#
      • 1...Se7
        • 2.Sa2#
      • 1...Se6!
    • 1.Qxf3?
      • threat
        • 2.Sa2#
      • 1...Sxb4
        • 2.Bb2#
      • 1...Se3!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qe1#
      • 1...Sxd3
        • 2.Sa2#
      • 1...Se2
        • 2.Bb2#
      • 1...Sg2
        • 2.Bb2#
      • 1...Sh3
        • 2.Bb2#
      • 1...Sh5
        • 2.Bb2#
      • 1...Se6
        • 2.Bb2#
      • 1...Sg6
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • B(b);::S(B)
    • B(b);P_PINP(E)::S(B)
    • S(c);SBLOCK,XP(E)::S(B)
    • S(e);SBLOCK,XR(G)::B(C)
  • Tries
    • Try
      • R(G);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::B(C)
      • Refutation
        • S(c);XP(E)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB(F)
        • S(c);::S(B)
      • Refutation
        • S(c);
    • Try
      • Q(F);
      • Threat
        • QAR(F)
      • Vars
        • S(c);SBLOCK,XP(E)::S(B)
        • S(e);SBLOCK,XR(G)::B(C)
        • S(e);::S(B)
      • Refutation
        • S(c);
    • Try
      • Q(F);XB(b)
      • Threat
        • S(B)
      • Vars
        • S(e);SBLOCK,XR(G)::B(C)
      • Refutation
        • S(e);
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • S(c);SBLOCK,XP(E)::S(B)
      • S(c);::B(C)
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