MESON Chess Problem Database

Problem Display
PID: 80152 (3r4/2n5/1b1r4/4pnR1/4kNp1/1P6/2PP2P1/1BK2Q2 w - - 0 1)

Casa, Alex

Nice-Matin, 1970

3r4/2n5/1b1r4/4pnR1/4kNp1/1P6/2PP2P1/1BK2Q2

#2

9 + 8

133 The Problemist Supplement 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc4#
    • 1...Bd4
      • 2.c3#
      • 2.c4#
    • 1...Sd5
      • 2.c3#
  • Tries
    • 1.Qd3+?
      • 1...Kxf4
        • 2.Rxf5#
      • 1...Rxd3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Rxd5
        • 2.Rxg4#
      • 1...Sxd5
        • 2.c3#
      • 1...Bd4
        • 2.c4#
      • 1...Sd4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(C)
    • S(g);S_CUTR(f)::B(A)+P(D)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(H)::R1(I),XS(d)
      • Refutation
        • R(f);XQ(C)
  • Actual
    • S(H);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT,XS(H)::QAB1(C)
      • R(f);SBLOCK,XS(H)::R(I),XP(b)
      • S(g);SBLOCK,XS(H)::B(A)+P(D)
      • B(e);SBLOCK::B(A)+P(D)
      • S(d);SBLOCK::S(H)
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