MESON Chess Problem Database

Problem Display
PID: 238827 (8/2K2n2/2pPkNPn/Qb4P1/4p3/2N2RP1/3P4/4R1B1 w - - 0 1)

Janevski, Zivko

Problemist Ukraini, 2013

8/2K2n2/2pPkNPn/Qb4P1/4p3/2N2RP1/3P4/4R1B1

#2

12 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rxe4#
    • 1...Sd8
      • 2.Rxe4#
    • 1...Sh8
      • 2.Rxe4#
  • Tries
    • 1.Scxe4?
      • threat
        • 2.Sc5#
      • 1...Ke5
        • 2.Sc3#
      • 1...c5
        • 2.Sxc5#
      • 1...Be2!
    • 1.Qa2+?
      • 1...Ke5
        • 2.Sd7#
        • 2.Rxe4#
        • 2.d4#
      • 1...Bc4!
  • Keys
    • 1.Sfxe4!
      • threat
        • 2.Sc5#
      • 1...Ke5
        • 2.Sf6#
      • 1...Be2
        • 2.Rf6#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(d);P-FLIGHT,P_SPINB(b)::R1(A),XP(a)
    • S(f);N_GUARD::R(A),XP(a)
  • Tries
    • Try
      • S(D);XP(a)
      • Threat
        • R(A)+S(D),DCHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(b)::R(A)+S(D)
        • P(c);::R(A)+S(D),DCHECK,XP(c)
      • Refutation
        • B(b);
    • Try
      • Q(G);CHECK
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • S(J);XP(a)
    • Threat
      • R(A)+S(J),DCHECK
    • Vars
      • K(d);P-FLIGHT,P_SPINB(b)::R(A)+S(J)
      • B(b);::R1(E)
      • P(c);::R(A)+S(J),DCHECK,XP(c)
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