MESON Chess Problem Database

Problem Display
PID: 255024 (4K3/b1p3p1/2P1Q3/1p3P2/3k2PB/1rr1N3/N1RnP1B1/1n1R4 w - - 0 1)

Lobusov, Andrey Jakovlevic

Sinfonie Scacchistiche, 1988

4K3/b1p3p1/2P1Q3/1p3P2/3k2PB/1rr1N3/N1RnP1B1/1n1R4

#2

12 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qe4#
    • 1...Rxc6
      • 2.Qe4#
    • 1...Bc5
      • 2.Qe4#
  • Tries
    • 1.Be7?
      • threat
        • 2.Qe4#
      • 1...Rxe3
        • 2.Qd5#
      • 1...Rd3!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Sf1#
      • 1...Rxe3
        • 2.Qe4#
      • 1...Rc5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(d);::QAR1(K)
    • R(d);XP(J)::QAR1(K)
    • B(g);SBLOCK::QAR1(K)
  • Tries
    • Try
      • B(H);
      • Threat
        • QAR1(K)
      • Vars
        • R(d);SBLOCK,XS(F)::QAR1(K)
      • Refutation
        • R(d);N_SPINS(b)
  • Actual
    • B(H);
    • Threat
      • QAR1(K)
    • Vars
      • K(e);N_SPINS(b),P_SPINR(d),S_FLIGHT::B(H)+S(F)
      • R(d);P_PINQ(K),P_SPINR(d),XS(F)::QAR1(K)
      • R(d);::QAR1(K)
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