MESON Chess Problem Database

Problem Display
PID: 171274 (3N4/4Q3/1rpp1r1N/1Rp1q2R/3kPP2/3P4/2KP4/8 w - - 0 1)

Archakov, Vladimir Mikhailovich

Sahs (Latvia), 1962

3N4/4Q3/1rpp1r1N/1Rp1q2R/3kPP2/3P4/2KP4/8

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Qxe4#
    • 1...Rxb5
      • 2.Sxc6#
    • 1...Rb7
      • 2.Sxc6#
    • 1...Rb8
      • 2.Sxc6#
    • 1...d5
      • 2.Qxc5#
      • 2.Qxe5#
  • Tries
    • 1.Rb4+?
      • 1...Rxb4
        • 2.Sxc6#
      • 1...c4
        • 2.Rxc4#
      • 1...cxb4!
    • 1.Qg7?
      • threat
        • 2.Qg1#
      • 1...Qxf4
        • 2.Se6#
      • 1...Rxf4
        • 2.Se6#
      • 1...Qg5
        • 2.Se6#
      • 1...Rg6
        • 2.Sf5#
      • 1...Qxe4!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qa1#
      • 1...Rxb5
        • 2.Sxc6#
      • 1...Ra6
        • 2.Rb4#
      • 1...c4
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);OGATE,P_PINP(C),XP(D)::QAR1(I),XQ(c)
    • R(d);N_GUARD,XR(F)::S(J),XP(e)
    • R(d);N_GUARD::S(J),XP(e)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(d);XR(F)::S(J),XP(e)
        • P(b);P_SPINP(b)::R1(F),XP(b)
      • Refutation
        • P(b);XR(F)
    • Try
      • Q(I);
      • Threat
        • QAB(I)
      • Vars
        • Q(c);N_GUARD,P_SPINR(g),XP(E)::S(J)
        • R(g);N_GUARD,P_SPINQ(c),XP(E)::S(J)
        • Q(c);N_GUARD,P_SPINR(g)::S(J)
        • R(g);N_GUARD,P_SPINQ(c)::S(H)
      • Refutation
        • Q(c);P_PINP(C),P_SPINR(g),XP(D)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • R(d);N_GUARD,P_SPINP(b),XR(F)::S(J),XP(e)
      • R(d);N_GUARD,P_SPINP(b)::R(F)
      • P(b);P_SPINR(d)::S(J),XP(e)
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