MESON Chess Problem Database

Problem Display
PID: 238823 (2B5/rnp5/prpp4/PkP2Q2/1N1P4/R1BP4/PNK2n2/8 w - - 0 1)

Janevski, Zivko

Kudesnik, 2013

2B5/rnp5/prpp4/PkP2Q2/1N1P4/R1BP4/PNK2n2/8

#2

12 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd3
      • 2.Qxd3#
  • Tries
    • 1.Sxa6?
      • threat
        • 2.Sxc7#
      • 1...Rbxa6
        • 2.Rb3#
      • 1...Raxa6
        • 2.Rb3#
      • 1...Sxa5
        • 2.Rxa5#
      • 1...Sxc5
        • 2.Rb3#
      • 1...Sd8
        • 2.Rb3#
      • 1...Kxa6!
    • 1.Sxc6?
      • threat
        • 2.Sxa7#
      • 1...Kxc6
        • 2.Bd7#
      • 1...Rxc6
        • 2.Rb3#
      • 1...Ra8!
    • 1.cxd6+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...c5!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Sd5#
      • 1...Kxa5
        • 2.Sxc6#
      • 1...Sxd3
        • 2.S4xd3#
      • 1...Sxa5
        • 2.a4#
      • 1...Sxc5
        • 2.Sxa6#
      • 1...d5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,XP(F)::QAB(K),XS(a)
  • Tries
    • Try
      • S(G);XP(c)
      • Threat
        • S(G),XP(i)
      • Vars
        • R(d);SBLOCK,XS(G)::R(D)
        • R(g);SBLOCK,XS(G)::R(D)
        • S(h);OGATE,XP(I)::R1(D),XS(h)
        • S(h);P_SPINS(h),XP(J)::R(D)
        • S(h);::R(D)
      • Refutation
        • K(b);P_SPINS(h),S_FLIGHT,XS(G)
    • Try
      • S(G);XP(e)
      • Threat
        • S(G),XR(g)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(G)::B(L)
        • R(d);SBLOCK,XS(G)::R(D)
      • Refutation
        • R(g);
    • Try
      • P(J);CHECK,XP(f)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAR1(K),XS(h)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • R(D);
    • Threat
      • R(D)+S(G)
    • Vars
      • K(b);P-FLIGHT,XP(I)::B(E)+S(G),DCHECK,XP(e)
      • S(a);XP(F)::R(D)+S(G),XS(a)
      • S(h);SBLOCK,XP(I)::P(A)
      • S(h);P_SPINS(h),XP(J)::R(D)+S(G),XP(c)
      • P(f);::R(D)+S(G),XP(f)
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