MESON Chess Problem Database

Problem Display
PID: 274518 (1q2B3/1pp5/1r2p3/pb1RQ3/2kpP3/Pn3N2/3BP2K/bNr4n w - - 0 1)

Gevers, Raymond

Die Schwalbe, 1933

1q2B3/1pp5/1r2p3/pb1RQ3/2kpP3/Pn3N2/3BP2K/bNr4n

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Bxb5#
    • 1...Rd6
      • 2.Bxb5#
    • 1...Sxd2
      • 2.Sfxd2#
    • 1...d3
      • 2.exd3#
    • 1...exd5
      • 2.Qxd5#
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Se5#
      • 1...c5+
        • 2.Rd6#
      • 1...c6+
        • 2.Re5#
      • 1...Rxe6
        • 2.Bxb5#
      • 1...Sxd2
        • 2.Sfxd2#
      • 1...Sc5
        • 2.Rxd4#
      • 1...d3
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(i);N_GUARD::B(J),XB(h)
    • S(d);XB(B)::S(F),XS(d)
    • P(f);OGATE::P(C),XP(f)
    • P(j);OGATE,XR(H)::QAB1(I),XP(j)
  • Actual
    • Q(I);XP(j)
    • Threat
      • S(F)
    • Vars
      • P(l);CHECK,SBLOCK::QAB(I)+R(H)
      • P(l);CHECK,S_CUTR(i)::QAB(I)+R(H)
      • R(i);N_GUARD,XQ(I)::B(J),XB(h)
      • S(d);XB(B)::S(F),XS(d)
      • S(d);SBLOCK::QAB(I)+R(H),DCHECK,XP(f)
      • P(f);OGATE::P(C),XP(f)
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