MESON Chess Problem Database

Problem Display
PID: 85047 (q7/3r4/3N2R1/1Q1bk3/r1p3P1/1nN1PRp1/p1B3K1/2n3B1 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Boletim da UBP, 1991

q7/3r4/3N2R1/1Q1bk3/r1p3P1/1nN1PRp1/p1B3K1/2n3B1

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Qxd5#
    • 1...Qa7
      • 2.Qxd5#
    • 1...Qb8
      • 2.Qxd5#
    • 1...Qc8
      • 2.Qxd5#
    • 1...Qd8
      • 2.Qxd5#
    • 1...Qe8
      • 2.Qxd5#
    • 1...Qf8
      • 2.Qxd5#
    • 1...Qh8
      • 2.Qxd5#
    • 1...Ra3
      • 2.Sxc4#
    • 1...Ra5
      • 2.Sxc4#
    • 1...Ra6
      • 2.Sxc4#
    • 1...Raa7
      • 2.Sxc4#
    • 1...Rb7
      • 2.Qxd5#
    • 1...Rf7
      • 2.Sxf7#
    • 1...Rd8
      • 2.Sf7#
    • 1...Sd4
      • 2.exd4#
  • Tries
    • 1.Kxg3?
      • threat
        • 2.Rf5#
      • 1...Qf8
        • 2.Qxd5#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Sd4
        • 2.exd4#
      • 1...Se2+!
    • 1.Sce4?
      • threat
        • 2.Rf5#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Sd4
        • 2.exd4#
      • 1...Qf8!
    • 1.e4?
      • threat
        • 2.Rf5#
      • 1...Qf8
        • 2.Qxd5#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Sd4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Rf5#
      • 1...Qf8
        • 2.Qxd5#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Sd4
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(j);N_GUARD::QAR1(H),XB(g)
    • R(e);N_GUARD::S(I),XP(f)
    • R(i);S_CUTQ(j)::QAR1(H),XB(g)
    • R(i);N_GUARD::S(I),XR(i)
    • R(i);N_GUARD::S(I)
    • S(c);OGATE::P(E),XS(c)
  • Tries
    • Try
      • K(C);N_SPINR(F),P-FLIGHT,XP(d)
      • Threat
        • R1(F)
      • Vars
        • Q(j);N_GUARD::QAR1(H),XB(g)
        • R(i);N_GUARD::S(I),XR(i)
        • S(c);OGATE::P(E),XS(c)
      • Refutation
        • S(a);CHECK
    • Try
      • S(D);N_SPINR(F)
      • Threat
        • R1(F)
      • Vars
        • R(i);N_GUARD::S(I),XR(i)
        • S(c);OGATE::P(E),XS(c)
      • Refutation
        • Q(j);
    • Try
      • P(E);N_SPINR(F)
      • Threat
        • R1(F)
      • Vars
        • Q(j);N_GUARD::QAR1(H),XB(g)
        • R(i);N_GUARD::S(I),XR(i)
      • Refutation
        • S(c);
  • Actual
    • B(B);N_SPINR(F)
    • Threat
      • R1(F)
    • Vars
      • Q(j);N_GUARD::QAR1(H),XB(g)
      • R(i);N_GUARD::S(I),XR(i)
      • S(c);OGATE::P(E),XS(c)
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