MESON Chess Problem Database

Problem Display
PID: 240351 (8/8/4BRp1/3R2p1/n1pPkN1b/3ppnp1/8/K4Q2 w - - 0 1)

Paslack, Rainer

Problem-Forum, 2007

8/8/4BRp1/3R2p1/n1pPkN1b/3ppnp1/8/K4Q2

#2

7 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Qb1#
    • 1...c3
      • 2.Qxd3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qxf3#
      • 1...dxe2
        • 2.Qb1#
      • 1...d2
        • 2.Qb1#
      • 1...Se1
        • 2.Re5#
      • 1...Sg1
        • 2.Re5#
      • 1...Sd2
        • 2.Re5#
      • 1...Sh2
        • 2.Re5#
      • 1...Se5
        • 2.Rxe5#
      • 1...g4
        • 2.Rf4#
      • 1...Sxd4!
  • Keys
    • 1.Sxg6!
      • threat
        • 2.Qxf3#
      • 1...Sxd4
        • 2.Re5#
      • 1...Se1
        • 2.Qf5#
      • 1...Sg1
        • 2.Qf5#
      • 1...Sd2
        • 2.Qf5#
      • 1...Sh2
        • 2.Qf5#
      • 1...Se5
        • 2.Qf5#
      • 1...d2
        • 2.Qb1#
      • 1...g4
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAB(B)
    • P(f);N_GUARD::QAB1(B),XP(a)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(B),XS(c)
      • Vars
        • P(a);OGATEB,XS(D)::QAB(B)
        • P(a);OGATEB::QAB(B)
        • S(c);N_GUARD::R1(E)
        • S(c);N_GUARD::R1(E),XS(c)
        • P(i);N_GUARD::R1(G)
      • Refutation
        • S(c);XP(C)
  • Actual
    • S(D);XP(j)
    • Threat
      • QAB1(B),XS(c)
    • Vars
      • S(c);N_GUARD,SBLOCK,XP(C)::R1(E)
      • S(c);OGATE::QAB1(B)
      • P(a);OGATEB::QAB(B)
      • P(i);N_GUARD::R1(G)
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