MESON Chess Problem Database

Problem Display
PID: 238555 (1r2Q3/2pp2K1/4q3/BP1P1p2/PR3p2/2N2p1B/R4P2/3Nk3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

7th Comm., Problemist Ukraini, 2009

1r2Q3/2pp2K1/4q3/BP1P1p2/PR3p2/2N2p1B/R4P2/3Nk3

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5+
      • 2.Qxe5#
    • 1...Qe7+
      • 2.Qxe7#
    • 1...d6
      • 2.Qxe6#
  • Tries
    • 1.Rd4?
      • threat
        • 2.Sb1#
        • 2.Se2#
        • 2.Se4#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qe7+
        • 2.Qxe7#
      • 1...Rxb5
        • 2.Sxb5#
      • 1...Qe2
        • 2.Sb1#
        • 2.Sxe2#
      • 1...Qe3
        • 2.Sb1#
      • 1...Qe4
        • 2.Sb1#
        • 2.Se2#
        • 2.Sxe4#
      • 1...Ra8!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Se3#
        • 2.Se2#
        • 2.Se4#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qe7+
        • 2.Qxe7#
      • 1...Rxb5
        • 2.Sxb5#
      • 1...Qe2
        • 2.Sxe2#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Qe4
        • 2.Sxe4#
      • 1...Ra8
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(e);CHECK,OGATE::QAR(L),XQ(e)
    • Q(e);CHECK,OGATEB::QAR(L),XQ(e)
    • P(g);N_GUARD::QAR(L),XQ(e)
  • Tries
    • Try
      • R(G);
      • Threat
        • DUALS(3)
      • Vars
        • Q(e);CHECK,OGATE::QAR(L),XQ(e)
        • Q(e);CHECK,OGATEB::QAR(L),XQ(e)
        • R(h);XP(I)::B(H)+S(D),XR(h)
        • Q(e);::B(H)+S(D)
      • Refutation
        • R(h);
  • Actual
    • R(G);
    • Threat
      • DUALS(3)
    • Vars
      • Q(e);CHECK,OGATE::QAR(L),XQ(e)
      • Q(e);CHECK,OGATEB::QAR(L),XQ(e)
      • R(h);XP(I)::B(H)+S(D),XR(h)
      • Q(e);::B(H)+S(D),XQ(e)
      • Q(e);::R(G)+S(A),XQ(e)
      • R(h);::R(G)+S(A)
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