MESON Chess Problem Database

Problem Display
PID: 244766 (8/5N2/1r1pp1p1/1p5Q/1K1kP2R/p2N2r1/1nP2P2/B7 w - - 0 1)

Dombrovskis, Alfreds A

Hlas l'udu, 1985

8/5N2/1r1pp1p1/1p5Q/1K1kP2R/p2N2r1/1nP2P2/B7

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...a2
      • 2.Bxb2#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Sxe6#
      • 1...d5
        • 2.Qe5#
      • 1...e5
        • 2.Se6#
      • 1...Rg4!
    • 1.Qd1?
      • threat
        • 2.c3#
      • 1...Rg4
        • 2.Sc5#
      • 1...Rc6!
    • 1.Qe2?
      • threat
        • 2.c3#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Rc6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sxe6#
      • 1...Rb3+
        • 2.Sxb3#
      • 1...dxc5+
        • 2.Qxc5#
      • 1...Rg4
        • 2.c3#
      • 1...d5
        • 2.Qe5#
      • 1...e5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::B(A),XS(a)
    • P(g);N_GUARD::QAB1(H)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I),XP(h)
      • Vars
        • P(g);N_GUARD::QAB1(H)
        • P(h);::S(I)
      • Refutation
        • R(c);
    • Try
      • Q(H);
      • Threat
        • P(B)
      • Vars
        • R(c);N_GUARD::QAR(H)+S(D)
      • Refutation
        • R(f);
    • Try
      • Q(H);
      • Threat
        • P(B)
      • Vars
        • R(c);OGATE,XS(D)::QAR1(H),XR(c)
      • Refutation
        • R(f);
  • Actual
    • S(D);
    • Threat
      • S(D),XP(h)
    • Vars
      • R(c);CHECK,N_GUARD::S(D),XR(c)
      • P(g);CHECK,OGATE,XS(D)::QAB1(H),XP(g)
      • R(c);N_GUARD::P(B)
      • P(g);N_GUARD::QAB1(H)
      • P(h);::S(D)
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