MESON Chess Problem Database

Problem Display
PID: 80088 (nB2R3/1Bp1K3/4N3/2Pr2p1/4k1Pp/R4N2/3Pr1P1/5n1Q w - - 0 1)

Handloser, Ralf Chris

1st HM., Probleemblad, 2008

nB2R3/1Bp1K3/4N3/2Pr2p1/4k1Pp/R4N2/3Pr1P1/5n1Q

#2

12 + 8

102 Probleemblad 2009
15527 schachkunst (1997-2010) (Hoffmann) 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sh2
      • 2.Qb1#
    • 1...Se3
      • 2.d3#
    • 1...Sg3
      • 2.Qb1#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Sfxg5#
      • 1...c6
        • 2.Sexg5#
      • 1...Rf2!
    • 1.Qxf1?
      • threat
        • 2.Qxe2#
        • 2.Qb1#
      • 1...Rxg2
        • 2.Re3#
        • 2.Ra4#
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qb1#
      • 1...Re1
        • 2.Ra4#
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qxe1#
      • 1...Rf2
        • 2.Re3#
        • 2.Ra4#
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qb1#
      • 1...Re3
        • 2.Rxe3#
        • 2.Ra4#
        • 2.Qc4#
      • 1...c6
        • 2.Qxe2#
      • 1...Rxd2!
  • Keys
    • 1.g3!
      • threat
        • 2.Sexg5#
      • 1...Sxg3
        • 2.Qb1#
      • 1...hxg3
        • 2.Qh7#
      • 1...c6
        • 2.Sfxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE::QAB(A)
    • S(a);SBLOCK::P(B)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • S(E),XP(f)
      • Vars
        • P(g);N_SPINR(e)::R(L)+S(H),DCHECK,XP(f)
      • Refutation
        • R(b);P_PINS(E)
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);N_SPINR(e)::QAR2(A),XR(b)
      • Refutation
        • R(b);XP(B)
  • Actual
    • P(C);
    • Threat
      • S(H),XP(f)
    • Vars
      • S(a);OGATE,XP(C)::QAB(A)
      • P(d);OGATE,XP(C)::QAB(A)
      • P(g);N_SPINR(e)::QAB(A)+S(E),DCHECK,XP(f)
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