MESON Chess Problem Database

Problem Display
PID: 7290 (B1K4Q/3pp3/1p3RP1/1P2PRq1/3k4/B4P1n/3NP3/n2N4 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Selivanov, Andrei Vladimirovich

Shavirin, Valery Mikhailovich

6th Comm., Netanya (Internet), 1999

B1K4Q/3pp3/1p3RP1/1P2PRq1/3k4/B4P1n/3NP3/n2N4

#2

13 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qg8?
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...Qxd2
        • 2.Qd5#
      • 1...Qxf5
        • 2.Qd5#
      • 1...Sf4
        • 2.Qc4#
      • 1...d5
        • 2.Qxd5#
      • 1...e6!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rc4#
      • 1...Kd5
        • 2.Rd6#
      • 1...Qxd2
        • 2.e6#
      • 1...dxc6
        • 2.Qd8#
      • 1...d5
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(M);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);XS(B)::QAR1(M)
        • Q(d);XR(H)::QAR1(M)
        • S(b);::QAR1(M)
        • P(f);::QAR1(M),XP(f)
      • Refutation
        • P(g);
  • Actual
    • R(I);
    • Threat
      • R1(I)
    • Vars
      • K(c);P-FLIGHT::B(K)+R(I),DCHECK
      • Q(d);N_GUARD,XS(B)::QAB(M)+P(G)
      • P(f);OGATEB,XR(I)::QAR(M)
      • P(f);SBLOCK::B(D)
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