MESON Chess Problem Database

Problem Display
PID: 99436 (2Kn4/1Np4B/R3pQ2/1ppk3r/1P2p2p/N1PPr3/4b3/8 w - - 0 1)

Viksna, Kristaps

Magyar Sakkelet, 1989

2Kn4/1Np4B/R3pQ2/1ppk3r/1P2p2p/N1PPr3/4b3/8

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Bxe4#
      • 2.dxe4#
    • 1...Rg3
      • 2.Bxe4#
      • 2.dxe4#
    • 1...Rh3
      • 2.Bxe4#
      • 2.dxe4#
    • 1...Re5
      • 2.Qxd8#
    • 1...Sxb7
      • 2.Qxe6#
    • 1...Sf7
      • 2.Qxe6#
    • 1...cxb4
      • 2.Qd4#
    • 1...c4
      • 2.Qd4#
    • 1...e5
      • 2.Qxd8#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sxe3#
      • 1...Rf3
        • 2.Bxe4#
      • 1...Rg3
        • 2.Bxe4#
      • 1...Rh3
        • 2.Bxe4#
      • 1...Rxd3!
    • 1.Qg5+?
      • 1...e5
        • 2.Qxd8#
      • 1...Rxg5!
    • 1.Qe7?
      • threat
        • 2.Qxc5#
      • 1...Sxb7
        • 2.Qxe6#
      • 1...cxb4
        • 2.Qc5#
      • 1...c4
        • 2.Qc5#
      • 1...Ke5!
    • 1.d4?
      • threat
        • 2.Qxd8#
      • 1...Rxh7
        • 2.Qe5#
      • 1...Sxb7
        • 2.Qxe6#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Sf7
        • 2.Qxe6#
      • 1...Sc6!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Qd4#
      • 1...Rxd3
        • 2.Bxe4#
      • 1...Sc6
        • 2.Qxe6#
      • 1...Re5
        • 2.Qxd8#
      • 1...e5
        • 2.Qxd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(h);SBLOCK::QAR(F),XS(k)
    • S(k);N_GUARD,XS(G)::QAB1(F),XP(i)
    • S(k);N_GUARD::QAB1(F),XP(i)
    • P(f);N_GUARD,XP(D)::QAR1(F)
    • P(f);N_GUARD::QAR1(F)
    • P(i);SBLOCK::QAR(F),XS(k)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A),XR(b)
      • Vars
        • R(b);N_GUARD::B(H),XP(c)
      • Refutation
        • R(b);XP(C)
    • Try
      • Q(F);CHECK
      • Vars
        • P(i);P_SPINP(i),SBLOCK::QAR(F),XS(k)
      • Refutation
        • R(h);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(f)
      • Vars
        • S(k);N_GUARD,XS(G)::QAB1(F),XP(i)
        • P(f);XP(D)::QAR1(F)
        • P(f);::QAR1(F)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(i)
    • Try
      • P(C);
      • Threat
        • QAR(F),XS(k)
      • Vars
        • R(h);N_GUARD,XB(H)::QAR1(F)
        • S(k);N_GUARD,XS(G)::QAB1(F),XP(i)
        • P(f);OGATE,XP(C)::QAR1(F),XP(f)
        • S(k);N_GUARD::QAB1(F),XP(i)
      • Refutation
        • S(k);
  • Actual
    • S(G);XP(f)
    • Threat
      • QAR1(F)
    • Vars
      • R(b);N_GUARD,XP(C)::B(H),XP(c)
      • S(k);N_GUARD::QAB1(F),XP(i)
      • R(h);SBLOCK::QAR(F),XS(k)
      • P(i);SBLOCK::QAR(F),XS(k)
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