MESON Chess Problem Database

Problem Display
PID: 171266 (1q4bb/1N1Q4/2pn4/3k3r/3P1P2/1P2RP2/4P2p/B6K w - - 0 1)

Archakov, Vladimir Mikhailovich

Comm., Sahs (Latvia), 1985

1q4bb/1N1Q4/2pn4/3k3r/3P1P2/1P2RP2/4P2p/B6K

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Qxd6#
    • 1...Qa8
      • 2.Qxd6#
    • 1...Qc8
      • 2.Qxd6#
    • 1...Qe8
      • 2.Qxd6#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bh7
      • 2.Qe6#
  • Tries
    • 1.Rd3?
      • threat
        • 2.e4#
      • 1...Qe8
        • 2.Qxd6#
      • 1...Re5
        • 2.dxe5#
      • 1...Bh7!
    • 1.Re5+?
      • 1...Bxe5
        • 2.e4#
      • 1...Rxe5!
    • 1.Re7?
      • threat
        • 2.e4#
      • 1...Bh7
        • 2.Qe6#
      • 1...Re5!
    • 1.Re8?
      • threat
        • 2.e4#
      • 1...Qxe8
        • 2.Qxd6#
      • 1...Bh7
        • 2.Qe6#
      • 1...Re5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Rc5#
      • 1...Kxd4
        • 2.Rd3#
      • 1...Bxd4
        • 2.e4#
      • 1...Qa7
        • 2.Qxd6#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD::QAR1(J),XS(e)
    • B(g);N_GUARD::QAB1(J),XB(g)
    • B(g);N_GUARD::QAB1(J)
  • Tries
    • Try
      • R(E);
      • Threat
        • P(C)
      • Vars
        • Q(f);N_GUARD::QAR1(J),XS(e)
        • R(c);OGATE::R(E)+P(G),XR(c)
      • Refutation
        • B(g);
    • Try
      • R(E);CHECK
      • Vars
        • B(h);XR(E)::P(C)
      • Refutation
        • R(c);XR(E)
    • Try
      • R(E);
      • Threat
        • P(C)
      • Vars
        • B(g);N_GUARD::QAB1(J)
      • Refutation
        • R(c);
    • Try
      • R(E);
      • Threat
        • P(C)
      • Vars
        • Q(f);N_GUARD,XR(E)::QAR1(J),XS(e)
        • B(g);N_GUARD::QAB1(J)
      • Refutation
        • R(c);
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(G)::B(A)+R(E),DCHECK
      • B(h);SBLOCK,XP(G)::P(C)
      • Q(f);N_GUARD::QAR1(J),XS(e)
      • P(d);::R1(E),XP(d)
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