MESON Chess Problem Database

Problem Display
PID: 238813 (2R5/3b4/Q7/pn2Rp2/3p3p/N1Pk2Nr/5P2/2K1B3 w - - 0 1)

Janevski, Zivko

Problemist Ukraini, 2012

2R5/3b4/Q7/pn2Rp2/3p3p/N1Pk2Nr/5P2/2K1B3

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc8
      • 2.Qxb5#
    • 1...dxc3
      • 2.Rd5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sf4#
      • 1...dxc3
        • 2.Rxc3#
      • 1...f4
        • 2.Sxf4#
      • 1...Rf3!
    • 1.Qc6?
      • threat
        • 2.Qf3#
        • 2.Qc4#
      • 1...Rxg3
        • 2.Qc4#
      • 1...Sxa3
        • 2.Qf3#
      • 1...dxc3
        • 2.Qc4#
      • 1...Be6
        • 2.Qf3#
      • 1...Sd6
        • 2.Qf3#
      • 1...Bxc6!
    • 1.Qh6?
      • threat
        • 2.Qd2#
      • 1...dxc3
        • 2.Qe3#
      • 1...f4!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Rxd4#
      • 1...Sxc3
        • 2.Rxc3#
      • 1...dxc3
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(h);N_GUARD,XR(I)::QAB(H),XS(f)
    • P(c);OGATEB,XP(E)::R(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • P(c);OGATE,XP(E)::R1(I),XP(c)
        • P(g);::S(F),XP(g)
      • Refutation
        • R(b);
    • Try
      • Q(H);N_PINS(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XS(F)::QAB1(H)
        • S(f);XS(D)::QAR2(H)
        • P(c);XP(E)::QAB1(H)
        • B(h);::QAR2(H)
        • S(f);::QAR2(H)
      • Refutation
        • B(h);XQ(H)
    • Try
      • Q(H);N_PINS(f)
      • Threat
        • QAR1(H)
      • Vars
        • P(c);N_GUARD,XP(E)::QAR1(H)
      • Refutation
        • P(g);
  • Actual
    • R(I);N_PINS(f)
    • Threat
      • R1(I),XP(c)
    • Vars
      • S(f);OGATE,XP(E)::QAB(H)+R(I),DCHECK,XS(f)
      • P(c);N_GUARD,XP(E)::R1(G)
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