MESON Chess Problem Database

Problem Display
PID: 106080 (Q2Rrq2/6p1/3n1R2/1n1P1NB1/1PN1k1K1/7p/4B3/8 w - - 0 1)

Dombrovskis, Alfreds A

Shedey, Sergey Oleksandrovich

Sachove umeni (Ceskoslovensky sach), 1976

Q2Rrq2/6p1/3n1R2/1n1P1NB1/1PN1k1K1/7p/4B3/8

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sd2#
    • 1...Re6
      • 2.Rxe6#
    • 1...Rxd8
      • 2.Re6#
    • 1...Sd4
      • 2.Sg3#
    • 1...Sf7
      • 2.d6#
    • 1...Sc8
      • 2.d6#
  • Tries
    • 1.Be3?
      • threat
        • 2.Sg3#
      • 1...Sxf5
        • 2.d6#
      • 1...Sxc4!
    • 1.Bf4?
      • threat
        • 2.Sd2#
      • 1...Sxc4
        • 2.d6#
      • 1...Sxf5!
    • 1.Rxe8+?
      • 1...Qe7
        • 2.Rxe7#
      • 1...Sxe8
        • 2.Re6#
        • 2.d6#
      • 1...Qxe8!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qh1#
      • 1...Kxd5
        • 2.Qa8#
      • 1...Sxc4
        • 2.Sg3#
      • 1...Sxf5
        • 2.Sd2#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(f);SBLOCK::S(C)
    • R(f);N_GUARD::R(H),XR(f)
    • R(f);N_GUARD,XR(J)::R(H)
    • S(c);SBLOCK::S(F)
    • S(d);OGATE::QAB(I)+P(E)
  • Tries
    • Try
      • B(G);
      • Threat
        • S(F)
      • Vars
        • S(d);OGATE,XS(F)::QAB(I)+P(E)
      • Refutation
        • S(d);XS(C)
    • Try
      • B(G);
      • Threat
        • S(C)
      • Vars
        • S(d);OGATE,XS(C)::QAB(I)+P(E)
      • Refutation
        • S(d);XS(F)
    • Try
      • R(J);CHECK,XR(f)
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::R(J),XQ(g)
      • Refutation
        • Q(g);XR(J)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • K(b);OGATEB,P_SPINS(d),S_FLIGHT,XP(E)::QAB(I)
      • S(d);XS(C)::S(F)
      • S(d);XS(F)::S(C)
      • S(c);N_GUARD::QAR1(I),XS(c)
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