MESON Chess Problem Database

Problem Display
PID: 233558 (8/1Q2K3/3N4/r3kNn1/4pp2/3B1r2/3P4/5b2 w - - 0 1)

Viksna, Kristaps

Freie Presse, 1989

8/1Q2K3/3N4/r3kNn1/4pp2/3B1r2/3P4/5b2

#2

6 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qb5#
    • 1...Ra2
      • 2.Qb5#
    • 1...Ra3
      • 2.Qb5#
    • 1...Ra4
      • 2.Qb5#
    • 1...Rb5
      • 2.Qxb5#
    • 1...Ra6
      • 2.Qb5#
    • 1...Ra8
      • 2.Qb5#
    • 1...Sh3
      • 2.Qxe4#
    • 1...Se6
      • 2.Qxe4#
    • 1...Sf7
      • 2.Qxe4#
    • 1...Sh7
      • 2.Qxe4#
    • 1...e3
      • 2.Sc4#
  • Tries
    • 1.Sf7+?
      • 1...Sxf7
        • 2.Qxe4#
      • 1...Kxf5!
  • Keys
    • 1.Bxe4!
      • threat
        • 2.d4#
      • 1...Rd3
        • 2.Sc4#
      • 1...Ra4
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd3
        • 2.Qb2#
      • 1...Se6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(e);N_GUARD::QAR(E)
    • R(e);N_GUARD::QAR(E),XR(e)
    • S(g);N_GUARD::QAR1(E),XP(c)
    • P(c);::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(g);XS(D)::QAR1(E),XP(c)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(c),XS(C)
  • Actual
    • B(B);XP(c)
    • Threat
      • P(A)
    • Vars
      • R(b);S_CUTB(a)::S(D)
      • R(e);N_GUARD::QAR1(E)
      • R(e);N_GUARD::QAR1(E),XR(e)
      • B(a);S_CUTR(b)::QAB(E)
      • S(g);N_GUARD::S(D)
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