MESON Chess Problem Database

Problem Display
PID: 109171 (7b/8/2K1p3/8/1pkp2N1/1Rp3Q1/6n1/3B4 w - - 0 1)

Piatesi, Antonio

Northwest Chess, 1975

7b/8/2K1p3/8/1pkp2N1/1Rp3Q1/6n1/3B4

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Sxe5#
    • 1...c2
      • 2.Qd3#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qb5#
      • 1...c2
        • 2.Qxb4#
      • 1...d3
        • 2.Rxb4#
        • 2.Qxb4#
      • 1...Kd3!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qe2#
      • 1...Bxe5
        • 2.Sxe5#
      • 1...c2
        • 2.Qxe6#
      • 1...d3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD::S(D),XB(g)
    • P(b);::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAR1(C),XP(c)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT::QAB1(C)
      • B(g);XQ(C)::S(D),XB(g)
      • P(b);::QAB(C),XP(f)
      • P(e);SBLOCK::QAR1(C)
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