MESON Chess Problem Database

Problem Display
PID: 118884 (5R2/3bpQ2/5b2/2N1pp1K/4Pk2/4rP2/3r1P2/2B3N1 w - - 0 1)

Udartsev, Valentin Filipovich

Canadian Chess Chat, 1982

5R2/3bpQ2/5b2/2N1pp1K/4Pk2/4rP2/3r1P2/2B3N1

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bxe3#
    • 1...Ra2
      • 2.Sd3#
      • 2.Bxe3#
    • 1...Rb2
      • 2.Sd3#
      • 2.Bxe3#
    • 1...Rc2
      • 2.Sd3#
      • 2.Bxe3#
    • 1...Rde2
      • 2.Sd3#
    • 1...Rdd3
      • 2.Sxd3#
    • 1...Rd4
      • 2.Bxe3#
    • 1...Rd5
      • 2.Bxe3#
    • 1...Rd6
      • 2.Bxe3#
    • 1...Re1
      • 2.Sd3#
    • 1...Ree2
      • 2.Sd3#
    • 1...Red3
      • 2.Sxd3#
    • 1...Rxf3
      • 2.Se2#
    • 1...Rxe4
      • 2.Sd3#
    • 1...Ba4
      • 2.Se6#
    • 1...Bb5
      • 2.Se6#
    • 1...Bc6
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Be8
      • 2.Se6#
  • Tries
    • 1.Bxd2?
      • threat
        • 2.Sd3#
        • 2.Bxe3#
      • 1...Bb5
        • 2.Se6#
        • 2.Bxe3#
      • 1...fxe4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qg3#
      • 1...Rxf2
        • 2.Sd3#
      • 1...Rxf3
        • 2.Se2#
      • 1...fxe4
        • 2.Qg5#
      • 1...Bh4
        • 2.Qg4#
      • 1...Bg5
        • 2.Qxg5#
      • 1...Be8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 14
  • Sets
    • R(a);OGATE,P_SPINR(b)::B(A),XR(b)
    • R(a);N_GUARD,P_SPINR(b)::S(F)
    • R(a);N_GUARD,P_SPINR(b)::S(F),XR(a)
    • R(b);N_GUARD,P_SPINR(a)::S(F)
    • R(b);N_GUARD,P_SPINR(a)::S(F),XR(b)
    • R(b);N_GUARD,P_SPINR(a),SBLOCK,XP(D)::S(B)
    • R(b);N_GUARD,P_SPINR(a),XP(E)::S(F)
    • B(g);N_GUARD::S(F)
    • B(g);N_GUARD::S(F),XB(g)
    • B(g);N_GUARD,P_PINQ(H)::S(F)
  • Tries
    • Try
      • B(A);P_PINR(b),XR(a)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);P_SPINB(f),XP(E)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • R(a);N_GUARD,P_SPINR(b),XP(C)::S(F)
      • R(b);N_GUARD,P_SPINR(a),SBLOCK,XP(D)::S(B)
      • P(e);P_SPINB(f),XP(E)::QAB1(H)
      • B(f);P_SPINP(e)::QAR1(H)
      • B(f);N_GUARD,P_SPINP(e)::QAB1(H),XB(f)
      • B(g);N_GUARD,P_PINQ(H)::S(F)
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