MESON Chess Problem Database

Problem Display
PID: 99898 (3R4/4N1p1/7p/1Kp5/2P1kPQ1/R3b2r/2P5/2n5 w - - 0 1)

Dombrovskis, Alfreds A

Magyar Sakkelet, 1988

3R4/4N1p1/7p/1Kp5/2P1kPQ1/R3b2r/2P5/2n5

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Qf5#
    • 1...Bg1
      • 2.Qf5#
    • 1...Bd2
      • 2.Qf5#
    • 1...Bf2
      • 2.Qf5#
    • 1...Bd4
      • 2.Qf5#
    • 1...Bxf4
      • 2.Qf5#
    • 1...Sd3
      • 2.cxd3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Re8#
      • 1...Bd4
        • 2.f5#
      • 1...Sd3
        • 2.cxd3#
      • 1...Rh5!
    • 1.Re8?
      • threat
        • 2.Sf5#
        • 2.Sc6#
      • 1...Kd4
        • 2.Sf5#
        • 2.Sc6#
      • 1...Rh5
        • 2.Sf5#
      • 1...Bd4
        • 2.Qf5#
      • 1...Sd3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Re8#
      • 1...Bd4
        • 2.Sd6#
      • 1...Sd3
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(c);SBLOCK::QAB1(E)
    • B(b);::QAB1(E)
    • B(b);P_SPINB(b),XP(D)::QAB1(E)
    • S(a);OGATE::P(A),XS(a)
  • Tries
    • Try
      • S(G);
      • Threat
        • R(H)
      • Vars
        • B(b);N_GUARD::QAR(E)+P(D)
        • S(a);OGATE::P(A),XS(a)
      • Refutation
        • R(c);
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::R(H)+S(G)
        • B(b);SBLOCK::QAB1(E)
      • Refutation
        • S(a);
  • Actual
    • S(G);
    • Threat
      • R(H)
    • Vars
      • B(b);SBLOCK::S(G)
      • S(a);OGATE::P(A),XS(a)
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