MESON Chess Problem Database

Problem Display
PID: 244773 (4B1Q1/b4p2/5B2/2p4p/4R2p/5k1p/4R3/K4n2 w - - 0 1)

Dombrovskis, Alfreds A

Sachsische Zeitung, 1986

4B1Q1/b4p2/5B2/2p4p/4R2p/5k1p/4R3/K4n2

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Qg2#
  • Tries
    • 1.Bxh4?
      • threat
        • 2.Qxf7#
      • 1...Se3
        • 2.R2xe3#
      • 1...Sg3
        • 2.Qxg3#
      • 1...f5
        • 2.Bxh5#
      • 1...f6
        • 2.Bxh5#
      • 1...Bb8!
    • 1.R4e3+?
      • 1...Kf4
        • 2.Qg5#
      • 1...Sxe3!
    • 1.Qxf7?
      • threat
        • 2.Bxh4#
        • 2.Be5#
      • 1...Kg3
        • 2.Bxh4#
        • 2.Be5#
      • 1...Bb8
        • 2.Be5#
      • 1...Sg3
        • 2.Qb3#
      • 1...Se3!
    • 1.Qg1?
      • threat
        • 2.Qf2#
      • 1...Se3
        • 2.R2xe3#
        • 2.Qxe3#
      • 1...c4!
    • 1.Qg5?
      • threat
        • 2.Qf4#
      • 1...Se3
        • 2.R4xe3#
        • 2.Qxe3#
      • 1...Bb8!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qxf7#
      • 1...Se3
        • 2.R4xe3#
      • 1...Sg3
        • 2.R4e3#
      • 1...f5
        • 2.Bxh5#
      • 1...f6
        • 2.Bxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAB1(F)
  • Tries
    • Try
      • B(D);XP(d)
      • Threat
        • QAR(F),XP(h)
      • Vars
        • S(a);N_GUARD::R1(B),XS(a)
        • S(a);N_GUARD::QAR1(F),XS(a)
        • P(h);OGATE::B(E),XP(f)
      • Refutation
        • B(g);
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(F)
      • Refutation
        • S(a);XR(C)
    • Try
      • Q(F);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::QAR(F)+B(D)
        • S(a);N_GUARD,SBLOCK::QAR(F)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Refutation
        • P(e);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Refutation
        • B(g);
  • Actual
    • B(D);
    • Threat
      • QAR(F),XP(h)
    • Vars
      • S(a);N_GUARD::R1(C),XS(a)
      • S(a);N_GUARD::R1(C)
      • P(h);OGATE::B(E),XP(f)
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