MESON Chess Problem Database

Problem Display
PID: 68829 (2R5/4p2B/pKnp1pr1/8/1pPkPB2/N1Nb3Q/1P6/2R3b1 w - - 0 1)

Novitski, Petr Adrinovich

3rd Prize, Springaren, 2002

2R5/4p2B/pKnp1pr1/8/1pPkPB2/N1Nb3Q/1P6/2R3b1

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Bxc4
      • 2.Sc2#
    • 1...Bxe4
      • 2.Se2#
  • Tries
    • 1.Be3+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Bxe3!
    • 1.Qe6?
      • threat
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...d5
        • 2.Qxd5#
      • 1...Rg5!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Rxd3#
        • 2.Qxd3#
      • 1...bxa3
        • 2.Qxd3#
      • 1...bxc3
        • 2.Qxd3#
      • 1...Rg3
        • 2.Se2#
      • 1...Be3
        • 2.Qxe3#
      • 1...Se5
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::QAB1(E)
    • B(a);N_GUARD::QAB1(E),XB(a)
    • B(b);N_GUARD,SBLOCK,XP(F)::S(C)
    • B(b);N_GUARD,SBLOCK,XP(G)::S(D)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • K(d);P_PINB(H),S_FLIGHT::QAR1(E)
      • Refutation
        • B(a);XB(H)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • B(b);OGATE,XP(F)::QAR1(E),XB(b)
        • B(b);OGATE,XP(G)::QAR1(E),XB(b)
        • P(g);::QAR1(E),XP(g)
      • Refutation
        • R(i);
  • Actual
    • R(A);P_PINB(b)
    • Threat
      • DUALS(2)
    • Vars
      • P(c);XS(C)::QAR1(E),XB(b)
      • P(c);XS(D)::QAR1(E),XB(b)
      • R(i);::S(D)
      • B(a);N_GUARD::QAB1(E),XB(a)
      • S(f);::S(C)
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