MESON Chess Problem Database

Problem Display
PID: 147165 (r1RrR1nb/pQp2nkp/8/6PB/3N4/7b/8/K7 w - - 0 1)

Verheye, Raymond

Canadian Chess Chat, 1983

r1RrR1nb/pQp2nkp/8/6PB/3N4/7b/8/K7

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Rxg8#
    • 1...Rd5
      • 2.Rxg8#
    • 1...Rd6
      • 2.Rxg8#
    • 1...Rd7
      • 2.Rxg8#
    • 1...Bf1
      • 2.Sf5#
      • 2.Se6#
    • 1...Bg2
      • 2.Sf5#
      • 2.Se6#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Be6
      • 2.Sxe6#
    • 1...c5
      • 2.Qxf7#
    • 1...c6
      • 2.Qxf7#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxf7#
      • 1...Sxg5
        • 2.Qf8#
      • 1...Rd7
        • 2.Rxg8#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Be6
        • 2.Sxe6#
      • 1...Se5
        • 2.Qf8#
      • 1...Sd6
        • 2.Qf8#
      • 1...Sfh6
        • 2.Qf8#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sgh6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • R(h);N_GUARD,XS(B)::R1(G),XS(i)
    • R(h);N_GUARD::R1(G),XS(i)
    • B(a);N_GUARD::S(B),XB(a)
    • P(c);OGATE,P_SPINS(d)::QAR1(E),XS(d)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XS(d)
    • Vars
      • S(d);OGATE,XP(C)::QAB1(E)
      • R(h);N_GUARD::R1(G),XS(i)
      • B(a);N_GUARD::S(B),XB(a)
      • S(d);OGATE::QAB1(E)
      • S(i);N_GUARD::QAB1(E),XS(i)
      • S(i);N_GUARD::QAB1(E)
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