MESON Chess Problem Database

Problem Display
PID: 135509 (bB4N1/K2QR1q1/2p1nr2/5kpB/1n1p2p1/3P2r1/4Pb2/5R2 w - - 0 1)

Ancin, Andrej

1st Prize, South African Chess Bulletin, 1937

bB4N1/K2QR1q1/2p1nr2/5kpB/1n1p2p1/3P2r1/4Pb2/5R2

#2

9 + 12

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe7
      • 2.Sxe7#
    • 1...Rg1
      • 2.Rxf2#
    • 1...Rf7
      • 2.Qxe6#
    • 1...Rf8
      • 2.Qxe6#
  • Keys
    • 1.Qxd4!
      • threat
        • 2.e4#
      • 1...Qxe7+
        • 2.Sxe7#
      • 1...Re3
        • 2.Qxg4#
      • 1...Sc5
        • 2.Qe5#
      • 1...Sc7
        • 2.Re5#
      • 1...c5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(k);P_PINQ(F),XR(G)::S(I),XQ(k)
    • R(b);N_GUARD::R(A),XB(a)
    • R(j);N_GUARD::QAB1(F),XS(i)
  • Actual
    • Q(F);N_PINS(i),P_SPINQ(F),P_SPINR(G),XP(d)
    • Threat
      • P(B)
    • Vars
      • Q(k);CHECK,XR(G)::S(I),XQ(k)
      • R(b);N_PINQ(F)::QAB1(F),XP(e)
      • S(i);N_PINQ(F)::QAR1(F)
      • S(i);N_PINR(G)::R1(G)
      • P(h);N_PINQ(F)::QAR1(F)
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