MESON Chess Problem Database

Problem Display
PID: 29363 (5r2/3n4/b3p3/3p1P2/3pk3/2PR3Q/7N/2BB3K w - - 0 1)

Dombrovskis, Alfreds A

1st HM., Source?, 1984

5r2/3n4/b3p3/3p1P2/3pk3/2PR3Q/7N/2BB3K

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Rxd4#
    • 1...e5
      • 2.Qf3#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Qf3#
      • 1...Kxf5
        • 2.Qh7#
      • 1...Rxf5
        • 2.Rxd4#
      • 1...Se5
        • 2.Sf2#
      • 1...Rh8!
    • 1.Re3+?
      • 1...Kf4
        • 2.Re1#
        • 2.Re2#
        • 2.Rxe6#
        • 2.Qg4#
      • 1...dxe3!
    • 1.Qg4+?
      • 1...Kxd3
        • 2.Qxd4#
      • 1...Ke5!
    • 1.cxd4?
      • threat
        • 2.Qf3#
      • 1...Rxf5
        • 2.Qe3#
      • 1...Bxd3
        • 2.Qg4#
      • 1...Se5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rxd4#
      • 1...Kxd3
        • 2.Sd2#
      • 1...Bxd3
        • 2.Qg4#
      • 1...dxc3
        • 2.Rd4#
      • 1...e5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(f);SBLOCK::R1(F),XP(a)
    • P(e);SBLOCK::QAB1(G)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(G)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(H)::QAB(G)
        • R(g);SBLOCK,XP(H)::R1(F),XP(a)
        • S(f);SBLOCK::S(D)
      • Refutation
        • R(g);P_PINQ(G)
    • Try
      • R(F);CHECK
      • Refutation
        • P(a);XR(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(F)::QAR1(G),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(E);XP(a)
      • Threat
        • QAB1(G)
      • Vars
        • R(g);SBLOCK,XP(H)::QAR1(G)
        • B(d);SBLOCK,XR(F)::QAR2(G)
      • Refutation
        • S(f);
  • Actual
    • S(D);
    • Threat
      • R1(F),XP(a)
    • Vars
      • K(b);S_FLIGHT,XR(F)::QAR(G)+S(D)
      • B(d);SBLOCK,XR(F)::QAR2(G)
      • P(a);XP(E)::R1(F)
      • P(e);SBLOCK::S(D)
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