MESON Chess Problem Database

Problem Display
PID: 204587 (2n5/1n6/2R2KN1/1P1k2pr/1P1p4/3R3p/3N2q1/7B w - - 0 1)

Bennett, Frederick

The Problemist, 1954

2n5/1n6/2R2KN1/1P1k2pr/1P1p4/3R3p/3N2q1/7B

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3+
      • 2.Bxf3#
    • 1...Qe4
      • 2.Bxe4#
    • 1...Sbd6
      • 2.Rc5#
    • 1...Sb6
      • 2.Se7#
    • 1...Scd6
      • 2.Se7#
    • 1...Sa7
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...h2
      • 2.Bxg2#
    • 1...g4
      • 2.Sf4#
  • Tries
    • 1.Re3?
      • threat
        • 2.Re5#
      • 1...Qf3+
        • 2.Bxf3#
      • 1...d3
        • 2.Rxd3#
      • 1...Qe4
        • 2.Bxe4#
      • 1...g4
        • 2.Sf4#
      • 1...dxe3!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rf5#
      • 1...Qxf3+
        • 2.Bxf3#
      • 1...d3
        • 2.Rxd3#
      • 1...Sbd6
        • 2.Rc5#
      • 1...Scd6
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...g4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(a);CHECK,OGATE::B(A),XQ(a)
    • Q(a);OGATE::B(A),XQ(a)
    • S(g);N_GUARD,SBLOCK::R1(F)
    • S(h);N_GUARD::S(H)
    • S(h);N_GUARD::S(H),XS(h)
    • P(b);N_GUARD::B(A),XQ(a)
    • P(e);N_GUARD::S(H)
  • Tries
    • Try
      • R(C);N_PINP(c)
      • Threat
        • R1(C)
      • Vars
        • Q(a);CHECK,OGATE::B(A),XQ(a)
        • P(c);OGATEB::R(C),XP(c)
        • Q(a);OGATE::B(A),XQ(a)
        • P(e);N_GUARD::S(H)
      • Refutation
        • P(c);XR(C)
  • Actual
    • R(C);N_PINP(c),N_PINQ(a)
    • Threat
      • R(C)
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XR(C)::B(A),XQ(a)
      • P(c);OGATEB::R(C),XP(c)
      • S(g);N_GUARD,SBLOCK::R1(F)
      • S(h);N_GUARD::S(H)
      • S(h);N_GUARD::S(H),XS(h)
      • P(e);N_GUARD::S(H)
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Developed and maintained by Brian Stephenson.
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