MESON Chess Problem Database

Problem Display
PID: 233540 (3nBr2/8/1K1pN3/3k1p2/2pB3r/2p3N1/2P4p/4Q3 w - - 0 1)

Viksna, Kristaps

Freie Presse, 1968

3nBr2/8/1K1pN3/3k1p2/2pB3r/2p3N1/2P4p/4Q3

#2

7 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Sc7#
    • 1...Sc6
      • 2.Bxc6#
    • 1...Sb7
      • 2.Bc6#
    • 1...Sf7
      • 2.Bc6#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Bxc3?
      • threat
        • 2.Sc7#
      • 1...Sxe6
        • 2.Bc6#
      • 1...Rh7
        • 2.Sf4#
      • 1...Rf7!
    • 1.Qe3?
      • threat
        • 2.Sc7#
      • 1...Sxe6
        • 2.Bc6#
      • 1...Rh7
        • 2.Sf4#
      • 1...Rf7!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sxc3#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kxe6
        • 2.Sf4#
      • 1...Sxe6
        • 2.Bc6#
      • 1...Rh3
        • 2.S2f4#
      • 1...Re4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(d);SBLOCK,XB(D)::S(F)
    • S(h);N_GUARD::B(G),XS(h)
    • S(h);N_GUARD::B(G)
    • P(f);N_GUARD,S_CUTR(d)::QAB1(A)
  • Tries
    • Try
      • B(D);XP(b)
      • Threat
        • S(F)
      • Vars
        • S(h);N_GUARD,XS(F)::B(G)
        • R(d);N_GUARD::S(F)
      • Refutation
        • R(i);
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • S(h);N_GUARD,XS(F)::B(G)
        • R(d);N_GUARD::S(F)
      • Refutation
        • R(i);
  • Actual
    • S(C);
    • Threat
      • S(C),XP(b)
    • Vars
      • K(e);S_FLIGHT::QAB(A)
      • K(e);S_FLIGHT,XS(F)::QAR(A)+S(C),DCHECK
      • S(h);N_GUARD,SBLOCK,XS(F)::B(G)
      • R(d);N_GUARD::S(C)
      • R(d);SBLOCK::S(F)
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