MESON Chess Problem Database

Problem Display
PID: 148326 (b4QKb/N1P5/n3P3/3Pk1P1/4pNP1/2P1P1n1/1R6/B2q4 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2012

b4QKb/N1P5/n3P3/3Pk1P1/4pNP1/2P1P1n1/1R6/B2q4

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.cxd4#
      • 2.exd4#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Sb8
      • 2.cxb8Q#
      • 2.cxb8B#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Sg6#
      • 1...Qxd5
        • 2.c4#
      • 1...Bxd5
        • 2.Sc6#
      • 1...Sc5!
    • 1.c4?
      • threat
        • 2.Sg6#
      • 1...Qxd5
        • 2.Rb5#
      • 1...Bxd5!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Qd6#
      • 1...Qxg4
        • 2.c4#
      • 1...Qxd5
        • 2.Sg6#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::S(J),XB(f)
    • S(e);OGATE::PXS(e)=Q
  • Tries
    • Try
      • R(B);
      • Threat
        • S(E)
      • Vars
        • Q(a);N_GUARD,P_PINP(I),P_SPINQ(a),XP(G)::B(A)+P(C)
        • B(f);N_GUARD,P_PINP(I),P_SPINB(f),XP(G)::S(J)
      • Refutation
        • S(e);
    • Try
      • P(C);
      • Threat
        • S(E)
      • Vars
        • Q(a);N_GUARD,P_PINP(I),XP(G)::B(A)+R(B)
      • Refutation
        • B(f);P_PINP(I),XP(G)
  • Actual
    • R(B);
    • Threat
      • QAB1(L)
    • Vars
      • Q(a);N_GUARD,P_PINP(H),XP(F)::B(A)+P(C)
      • Q(a);P_PINP(I),SBLOCK,XP(G)::S(E)
      • B(f);N_GUARD::S(J),XB(f)
      • S(b);N_GUARD::QAR1(L),XS(b)
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