MESON Chess Problem Database

Problem Display
PID: 140186 (7B/8/2K5/1p1NN3/3kq1Q1/n2r2n1/3P4/4R3 w - - 0 1)

Kuznetsov, Aleksandr Petrovich

Themes-64, 1964

7B/8/2K5/1p1NN3/3kq1Q1/n2r2n1/3P4/4R3

#2

7 + 6

102 Probleemblad 1975

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3+
      • 2.dxc3#
    • 1...Re3
      • 2.dxe3#
    • 1...Sc4
      • 2.Sf3#
    • 1...Sf1
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sh1
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sf5
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sh5
      • 2.Rxe4#
      • 2.Qxe4#
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qa7#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Qg6+
        • 2.Sf6#
      • 1...Rc3+
        • 2.dxc3#
      • 1...Qxe1
        • 2.Sc3#
      • 1...Qxe5
        • 2.Sb6#
      • 1...Qe2
        • 2.Sc3#
      • 1...Qe3
        • 2.Sc3#
      • 1...Qh7
        • 2.Se7#
      • 1...Sc4
        • 2.Sf3#

This is after

After M Franken.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(b);CHECK,OGATE::P(B),XR(b)
    • R(b);OGATE::P(B),XR(b)
    • S(a);SBLOCK::B(G)+S(E),DCHECK
  • Actual
    • Q(C);N_PINQ(e)
    • Threat
      • QAB(C)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINQ(e),XS(D)::QAR1(C),XQ(e)
      • Q(e);CHECK,N_PINS(D)::QAR(C)+S(D)
      • R(b);CHECK,OGATE::P(B),XR(b)
      • Q(e);N_PINS(D),XR(A)::QAR(C)+S(D)
      • Q(e);N_PINS(D),P_SPINQ(e),XS(E)::QAR(C)+S(D)
      • Q(e);N_PINS(D)::QAR(C)+S(D)
      • S(a);SBLOCK::B(G)+S(E),DCHECK
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