MESON Chess Problem Database

Problem Display
PID: 138082 (K7/3pp2p/1p1Pk2B/1NbN3Q/4nP2/2p1n1p1/2B1Rpb1/3R4 w - - 0 1)

Dombrovskis, Alfreds A

3rd Comm., Trud, 1947

K7/3pp2p/1p1Pk2B/1NbN3Q/4nP2/2p1n1p1/2B1Rpb1/3R4

#2

10 + 12

14752 Soviet Chess Compositions (1945-1947) 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Sd4#
    • 1...Sd2
      • 2.Qf5#
    • 1...Sxd6
      • 2.Sc7#
    • 1...Sf6
      • 2.Bf5#
    • 1...exd6
      • 2.Sbc7#
  • Tries
    • 1.Sd4+?
      • 1...Kxd6
        • 2.Qe5#
      • 1...Bxd4!
    • 1.Qg6+?
      • 1...Sf6
        • 2.Bf5#
      • 1...hxg6!
    • 1.f5+?
      • 1...Ke5
        • 2.Bf4#
      • 1...Sxf5!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Sdc7#
      • 1...Bxd6
        • 2.Sd4#
      • 1...Sxd5
        • 2.Qxd5#
        • 2.f5#
      • 1...Sxd6
        • 2.Sc7#
      • 1...exd6
        • 2.Sbc7#
      • 1...Sd2
        • 2.Qf5#
      • 1...Sg5
        • 2.f5#
      • 1...Sf6
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD,SBLOCK,XP(H)::S(E)
    • S(f);P_PINS(F),P_SPINS(d)::QAB1(G)
    • S(f);P_PINS(F),P_SPINS(d),SBLOCK,XP(H)::S(E)
    • S(f);OGATE,P_PINS(F),P_SPINS(d)::B(B)
    • P(k);SBLOCK,XP(H)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(i);P-FLIGHT,XP(H)::QAB1(G)
      • Refutation
        • B(g);XS(E)
    • Try
      • Q(G);CHECK
      • Vars
        • S(f);OGATE,P_PINS(F),P_SPINS(d)::B(B)
      • Refutation
        • P(l);XQ(G)
    • Try
      • P(D);CHECK
      • Vars
        • K(i);P-FLIGHT::B(I)
      • Refutation
        • S(d);P_SPINS(f),XP(D)
  • Actual
    • B(I);
    • Threat
      • S(F)
    • Vars
      • B(g);N_GUARD,SBLOCK,XP(H)::S(E)
      • S(f);P_PINS(F),P_SPINS(d),SBLOCK,XP(H)::S(E)
      • P(k);SBLOCK,XP(H)::S(E)
      • S(f);P_PINS(F),P_SPINS(d)::QAB1(G)
      • S(f);P_PINS(F),P_SPINS(d)::P(D)
      • S(f);OGATE,P_PINS(F),P_SPINS(d)::B(B)
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