MESON Chess Problem Database

Problem Display
PID: 139375 (r7/2n5/1Q1p2Rp/1n2k3/1P2pNRN/4pP2/3P4/b5K1 w - - 0 1)

Janevski, Zivko

2nd HM., Rochade Europa, 2008-2009

r7/2n5/1Q1p2Rp/1n2k3/1P2pNRN/4pP2/3P4/b5K1

#2

9 + 9

1106 Rochade Europa 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Qxd6#
    • 1...Sc3
      • 2.Qxd6#
    • 1...Sd4
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qxd6#
    • 1...Sd5
      • 2.Re6#
    • 1...Sa6
      • 2.Re6#
    • 1...Se6
      • 2.Rxe6#
    • 1...Se8
      • 2.Re6#
    • 1...exf3
      • 2.Qxe3#
    • 1...d5
      • 2.Qf6#
  • Tries
    • 1.R4g5+?
      • 1...Kxf4
        • 2.Rf5#
        • 2.Qxe3#
        • 2.dxe3#
      • 1...hxg5!
    • 1.Qxe3?
      • threat
        • 2.Qxe4#
      • 1...Sc3
        • 2.d4#
      • 1...d5
        • 2.Sd3#
      • 1...Bd4!
    • 1.d4+?
      • 1...Sxd4
        • 2.Qxd6#
      • 1...exd4 ep
        • 2.Qxe3#
      • 1...Bxd4!
    • 1.fxe4?
      • threat
        • 2.Sd3#
      • 1...Kxe4
        • 2.Qxe3#
      • 1...Ra3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxe4#
      • 1...Kd4
        • 2.Qxe4#
      • 1...exf3
        • 2.Sd3#
      • 1...Sc3
        • 2.Qxd6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...d5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • S(d);N_GUARD::QAB1(H),XP(f)
    • S(h);N_GUARD::R1(I)
    • S(h);N_GUARD::R1(I),XS(h)
    • P(c);OGATEB,XP(C)::QAR2(H),XP(b)
    • P(f);OGATE::QAB1(H)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • P(g);XR(F)
    • Try
      • Q(H);P_PINP(c),XP(b)
      • Threat
        • QAR1(H),XP(c)
      • Vars
        • S(d);N_GUARD,S_CUTB(a)::P(B)
        • P(f);SBLOCK::S(E)
      • Refutation
        • B(a);P_PINQ(H)
    • Try
      • P(B);CHECK
      • Vars
        • S(d);XP(B)::QAB1(H),XP(f)
        • P(c);EP,OGATE,XP(B)::QAR2(H),XP(b)
      • Refutation
        • B(a);XP(B)
    • Try
      • P(C);XP(c)
      • Threat
        • S(E)
      • Vars
        • K(e);OGATEB,P-FLIGHT,XP(C)::QAR1(H),XP(b)
      • Refutation
        • R(i);
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(c)
    • Vars
      • K(e);S_FLIGHT::QAR1(H),XP(c)
      • P(c);N_GUARD,XP(C)::S(E)
      • S(d);N_GUARD::QAB1(H),XP(f)
      • S(h);N_GUARD::QAR1(H),XS(h)
      • P(f);OGATE::QAB1(H)
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