MESON Chess Problem Database

Problem Display
PID: 108805 (2Nr4/3n4/2B1bq2/3P1rp1/R2pkb2/4pNP1/2K5/3Q4 w - - 0 1)

Lazarev, Yuri Archakovich

05. USSR Ty., 1959

2Nr4/3n4/2B1bq2/3P1rp1/R2pkb2/4pNP1/2K5/3Q4

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe7
      • 2.Rxd4#
    • 1...Qg6
      • 2.Rxd4#
    • 1...Qh6
      • 2.Rxd4#
    • 1...Qf7
      • 2.Rxd4#
    • 1...Qf8
      • 2.Rxd4#
    • 1...Re5
      • 2.Sd6#
    • 1...Be5
      • 2.dxe6#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Se5
      • 2.Rxd4#
    • 1...e2
      • 2.Qd3#
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxd4#
      • 1...Kxe5
        • 2.Qxd4#
      • 1...Qxe5
        • 2.Qh1#
      • 1...Rxe5
        • 2.Sd6#
      • 1...Bxe5
        • 2.dxe6#
      • 1...Sxe5
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(h);N_GUARD::R1(E),XP(b)
    • R(e);S_CUTB(d)::S(H)
    • B(d);S_CUTR(e)::B(G)+P(F),XB(g)
    • B(d);N_GUARD::S(H),XB(d)
    • S(i);S_CUTQ(h)::R1(E),XP(b)
    • P(a);::QAB1(A)
  • Actual
    • S(C);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • K(c);N_SPINP(b),P-FLIGHT,XS(C)::QAB1(A),XP(b)
      • Q(h);SBLOCK,XS(C)::QAB(A)
      • R(e);SBLOCK,XS(C)::S(H)
      • B(d);SBLOCK,XS(C)::B(G)+P(F),XB(g)
      • S(i);SBLOCK,XS(C)::R1(E),XP(b)
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