MESON Chess Problem Database

Problem Display
PID: 238793 (5K2/Pb2p3/pBp1Q3/Pkn2R2/1N2np2/2pNp3/2P2q2/R7 w - - 0 1)

Janevski, Zivko

Problemist Ukraini, 2009

5K2/Pb2p3/pBp1Q3/Pkn2R2/1N2np2/2pNp3/2P2q2/R7

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Rxc5#
    • 1...Sg3
      • 2.Rxc5#
    • 1...Sg5
      • 2.Rxc5#
    • 1...Sd6
      • 2.Rxc5#
    • 1...Sf6
      • 2.Rxc5#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Qb3#
      • 1...Ka4
        • 2.Sxc3#
      • 1...Sd2
        • 2.Sxc3#
      • 1...Qxc2!
    • 1.Sxc6?
      • threat
        • 2.Sd4#
      • 1...Bxc6
        • 2.Qb3#
      • 1...e2!
    • 1.Qb3?
      • threat
        • 2.Sa2#
      • 1...Qxc2
        • 2.Sxc2#
      • 1...Sd2
        • 2.Rxc5#
      • 1...e5!
  • Keys
    • 1.Sxa6!
      • threat
        • 2.Sc7#
      • 1...Kxa6
        • 2.Qc4#
      • 1...Bxa6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(d);N_GUARD::R1(F),XS(g)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR2(H)
      • Vars
        • K(f);N_SPINS(g),S_FLIGHT::R(A)+S(D),DCHECK,XP(b)
        • S(d);N_GUARD::S(D),XP(b)
      • Refutation
        • Q(a);XP(B)
    • Try
      • S(D);XP(i)
      • Threat
        • S(D)
      • Vars
        • B(j);SBLOCK,XS(D)::QAR2(H)
      • Refutation
        • P(c);
    • Try
      • Q(H);
      • Threat
        • QAR(H)+S(D)
      • Vars
        • Q(a);XP(B)::QAR(H)+S(D),XQ(a)
        • S(d);N_GUARD::R1(F),XS(g)
      • Refutation
        • P(k);N_SPINS(g)
  • Actual
    • S(D);XP(h)
    • Threat
      • S(D)
    • Vars
      • K(f);N_SPINS(g),S_FLIGHT,XS(D)::QAB(H)
      • B(j);SBLOCK,XS(D)::QAR2(H)
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