MESON Chess Problem Database

Problem Display
PID: 52843 (3qb3/Q3p1K1/1p6/1k1BN3/1P2N1R1/1p6/2PP4/1nr3B1 w - - 0 1)

Paslack, Rainer

Schach, 2004

3qb3/Q3p1K1/1p6/1k1BN3/1P2N1R1/1p6/2PP4/1nr3B1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb4
      • 2.Sc3#
      • 2.Sd6#
    • 1...Sxd2
      • 2.Sc3#
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
  • Tries
    • 1.Bc6+?
      • 1...Kxb4
        • 2.Sd6#
        • 2.Qa4#
      • 1...Bxc6!
    • 1.Qa6+?
      • 1...Kxb4
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sf6#
        • 2.Sd3#
      • 1...Kxa6!
    • 1.cxb3?
      • threat
        • 2.Qa4#
      • 1...Kxb4
        • 2.Sc3#
      • 1...Qa8
        • 2.Qxb6#
      • 1...Sc3!
    • 1.c4+?
      • 1...Kxb4
        • 2.Sd3#
      • 1...Rxc4!
  • Keys
    • 1.Bxb3!
      • threat
        • 2.Qa4#
      • 1...Kxb4
        • 2.Sd6#
      • 1...Qa8
        • 2.Qxb6#
      • 1...Sc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD,XP(C)::S(E)
    • S(a);N_GUARD::S(E)
    • S(a);N_GUARD::S(E),XS(a)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • B(h);XB(G)
    • Try
      • Q(I);CHECK
      • Refutation
        • K(d);S_FLIGHT,XQ(I)
    • Try
      • P(B);XP(c)
      • Threat
        • QAB1(I)
      • Vars
        • K(d);P-FLIGHT,XP(D)::R(F)+S(E)
        • Q(g);N_GUARD::QAR1(I),XP(e)
      • Refutation
        • S(a);
    • Try
      • P(B);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(D)::S(H)
      • Refutation
        • R(b);XP(B)
  • Actual
    • B(G);XP(c)
    • Threat
      • QAB1(I)
    • Vars
      • K(d);P-FLIGHT,XP(D)::R(F)+S(E)
      • Q(g);N_GUARD::QAR1(I),XP(e)
      • S(a);N_GUARD::S(E),XS(a)
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