MESON Chess Problem Database

Problem Display
PID: 83853 (4N3/8/2p1p3/n1bk4/N5K1/1n3P2/1Q6/5B2 w - - 0 1)

Roura, Juan R

Good Companions, 1919

4N3/8/2p1p3/n1bk4/N5K1/1n3P2/1Q6/5B2

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Sf6#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Sd2
        • 2.Qxc5#
      • 1...e5!
  • Keys
    • 1.f4!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qg2#
      • 1...Bd6
        • 2.Sf6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sc4
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::S(F)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(d);P-FLIGHT::QAR1(B)
        • S(a);N_GUARD::QAR1(B),XB(c)
      • Refutation
        • P(f);
  • Actual
    • P(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(d);S_FLIGHT::QAR1(B)
      • P(f);::QAR1(B),XP(f)
      • B(c);SBLOCK::QAB(B)
      • B(c);SBLOCK::S(F)
      • S(a);SBLOCK::S(D)
      • S(b);SBLOCK::B(A)
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