MESON Chess Problem Database

Problem Display
PID: 258122 (2b1R3/7r/6p1/1Q2N3/1KB1k2r/2P3B1/8/8 w - - 0 1)

Dombrovskis, Alfreds A

Berliner Morgenpost, 1960

2b1R3/7r/6p1/1Q2N3/1KB1k2r/2P3B1/8/8

#2

7 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Re7
        • 2.Qd5#
      • 1...Be6
        • 2.Qd5#
      • 1...Kf3!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Qxg6#
      • 1...Ke3!
    • 1.Qd5+?
      • 1...Ke3
        • 2.Sg4#
        • 2.Qd3#
      • 1...Kf5!
  • Keys
    • 1.Be2!
      • threat
        • 2.Qd3#
      • 1...Ke3+
        • 2.Sc4#
      • 1...Kf5+
        • 2.Sg4#
      • 1...Rb7
        • 2.Sd7#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Ba6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(d);P_SPINR(d)::QAB1(E)
        • B(e);P_SPINB(e)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);N_GUARD,P_PINB(D),S_CUTB(e),S_FLIGHT::QAB1(E),XP(c)
      • Refutation
        • K(a);P-FLIGHT,P_PINB(D)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P_PINB(D),S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);CHECK,P-FLIGHT::R(G)+S(F),DCHECK
      • K(a);CHECK,S_CUTB(e),S_CUTR(d),S_FLIGHT::QAR(E)+S(F)
      • R(d);N_GUARD,P_PINQ(E)::R(G)+S(F)
      • R(d);N_GUARD::R(G)+S(F),XR(d)
      • B(e);N_GUARD::R(G)+S(F)
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