MESON Chess Problem Database

Problem Display
PID: 52252 (8/2Qp4/r3p1n1/1Ppk2N1/1b1P4/1P1p4/2P1PK2/4nB2 w - - 0 1)

Schafer, Peter

Comm., Rochade Europa, 1988

8/2Qp4/r3p1n1/1Ppk2N1/1b1P4/1P1p4/2P1PK2/4nB2

#2

9 + 9

102 Probleemblad 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxd7#
    • 1...Ra2
      • 2.Qxd7#
    • 1...Ra3
      • 2.Qxd7#
    • 1...Ra4
      • 2.Qxd7#
    • 1...Ra5
      • 2.Qxd7#
    • 1...Ra8
      • 2.Qxd7#
    • 1...Bd2
      • 2.Qxc5#
    • 1...Bc3
      • 2.Qxc5#
    • 1...Ba5
      • 2.Qxc5#
    • 1...Sf4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Se7
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
    • 1...Sh8
      • 2.Qe5#
  • Tries
    • 1.c3?
      • threat
        • 2.e4#
      • 1...Bxc3
        • 2.Qxc5#
      • 1...cxd4
        • 2.c4#
      • 1...Ra2
        • 2.Qxd7#
      • 1...dxe2!
  • Keys
    • 1.e3!
      • threat
        • 2.c4#
      • 1...Sxc2
        • 2.Bg2#
      • 1...dxc2
        • 2.Bc4#
      • 1...cxd4
        • 2.e4#
      • 1...Ra2
        • 2.Qxd7#
      • 1...Bc3
        • 2.Qxc5#
      • 1...Se5
        • 2.Qxe5#
      • 1...c4
        • 2.bxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • R(f);N_GUARD::QAR2(I),XP(i)
    • B(c);N_GUARD::QAR1(I),XP(d)
    • S(h);N_GUARD::QAR1(I)
    • S(h);N_GUARD::QAR1(I),XS(h)
  • Tries
    • Try
      • P(B);
      • Threat
        • P(C)
      • Vars
        • B(c);N_GUARD,XP(B)::QAR1(I),XP(d)
        • P(d);SBLOCK,XP(F)::P(B)
        • R(f);N_GUARD,P_PINP(C)::QAR2(I),XP(i)
      • Refutation
        • P(b);XP(C)
  • Actual
    • P(C);
    • Threat
      • P(B)
    • Vars
      • S(a);N_GUARD,XP(B)::B(A)
      • P(b);OGATE,XP(B)::B(A)
      • P(d);SBLOCK,XP(F)::P(C)
      • R(f);N_GUARD,P_PINP(B)::QAR2(I),XP(i)
      • B(c);N_GUARD::QAR1(I),XP(d)
      • S(h);N_GUARD::QAR1(I),XS(h)
      • P(d);OGATE::P(E),XP(d)
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