MESON Chess Problem Database

Problem Display
PID: 108686 (5Q2/8/4Bp2/R3r1r1/2ppkPp1/3N2R1/2P5/BnK2N2 w - - 0 1)

Korenev, Valery Ivanovich

Valery Kirillov-50 JT, 2001

5Q2/8/4Bp2/R3r1r1/2ppkPp1/3N2R1/2P5/BnK2N2

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sa3
      • 2.Sd2#
    • 1...Sc3
      • 2.Sd2#
    • 1...f5
      • 2.Rxe5#
  • Tries
    • 1.Rxe5+?
      • 1...fxe5
        • 2.Sf2#
        • 2.Sc5#
        • 2.Qa8#
      • 1...Rxe5!
    • 1.Qd6?
      • threat
        • 2.Qxd4#
      • 1...Rd5
        • 2.Sf2#
      • 1...Sc3
        • 2.Sd2#
      • 1...c3!
    • 1.Qh6?
      • threat
        • 2.Qh1#
      • 1...Rh5
        • 2.Sf2#
      • 1...Sd2
        • 2.Sxd2#
      • 1...cxd3!
    • 1.Qxf6?
      • threat
        • 2.Sf2#
      • 1...cxd3
        • 2.cxd3#
      • 1...Ref5
        • 2.Qxd4#
      • 1...Rgf5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qe1#
      • 1...cxd3
        • 2.Qxd4#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sc3
        • 2.Sd2#
      • 1...c3
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::S(C),XS(a)
    • S(a);N_GUARD::S(C)
    • P(h);N_GUARD,S_CUTR(g)::R1(H),XR(f)
  • Tries
    • Try
      • R(H);CHECK,XR(f)
      • Refutation
        • R(g);XR(H)
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(c)
      • Vars
        • R(f);::S(E)
        • S(a);N_GUARD::S(C)
      • Refutation
        • P(b);
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • R(g);::S(E)
        • S(a);N_GUARD::S(C),XS(a)
      • Refutation
        • P(b);XS(E)
    • Try
      • Q(J);XP(h)
      • Threat
        • S(E)
      • Vars
        • P(b);OGATE,XS(E)::P(D),XP(b)
        • R(f);OGATE::QAR1(J),XP(c)
      • Refutation
        • R(g);
  • Actual
    • Q(J);
    • Threat
      • QAR(J)
    • Vars
      • P(b);OGATE,P_SPINP(c),XS(E)::QAR1(J),XP(c)
      • S(a);N_GUARD::S(C),XS(a)
      • S(a);N_GUARD::S(C)
      • P(b);P_SPINP(c)::R1(F)
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