MESON Chess Problem Database

Problem Display
PID: 140927 (q2B4/p2Pp3/N1k1P3/P1N1K3/PQp1P3/n1p5/2P5/8 w - - 0 1)

Sklenar, Jozef

Hlas l'udu, 1969

q2B4/p2Pp3/N1k1P3/P1N1K3/PQp1P3/n1p5/2P5/8

#2

11 + 7

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Qxb7#
    • 1...Qb8+
      • 2.Sxb8#
    • 1...Qc8
      • 2.dxc8Q#
      • 2.dxc8R#
    • 1...Qxd8
      • 2.Qb7#
    • 1...Sb1
      • 2.Qb5#
    • 1...Sxc2
      • 2.Qb5#
    • 1...Sb5
      • 2.Qxb5#
      • 2.axb5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd4#
      • 1...Qb8+
        • 2.Sxb8#
      • 1...Sxc2
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...cxb3!
    • 1.Qxc4?
      • threat
        • 2.Sb4#
        • 2.Qd5#
      • 1...Qb8+
        • 2.Sxb8#
      • 1...Qxd8
        • 2.Qd5#
      • 1...Sxc2
        • 2.Qb5#
        • 2.Qd5#
      • 1...Qb7
        • 2.Qd5#
      • 1...Sxc4+!
    • 1.Qb8?
      • threat
        • 2.Qc7#
        • 2.Qxa8#
      • 1...Qb7
        • 2.Qxb7#
      • 1...Sb5
        • 2.Qxb5#
        • 2.Qxa8#
        • 2.axb5#
      • 1...Qxb8+!
  • Keys
    • 1.Sb7!
      • 1...Qb8+
        • 2.Sxb8#
      • 1...Qxb7
        • 2.Qc5#
      • 1...Qxd8
        • 2.Sxd8#
      • 1...Sxc2
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Qc8
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Sb1
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD::QAB1(C),XQ(g)
    • Q(g);CHECK,N_GUARD::S(H),XQ(g)
    • Q(g);OGATE::PXQ(g)=Q
    • Q(g);N_GUARD,XB(K)::QAB1(C)
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD,XP(A)::QAB1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • Q(g);CHECK,N_GUARD::S(H),XQ(g)
        • S(a);N_GUARD,XP(A)::QAB1(C)
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • P(c);XS(F)
    • Try
      • Q(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);CHECK,N_GUARD::S(H),XQ(g)
        • Q(g);XB(K)::QAB1(C)
        • Q(g);::QAB1(C)
      • Refutation
        • S(a);CHECK,XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);N_GUARD::QAB1(C),XQ(g)
      • Refutation
        • Q(g);CHECK,XQ(C)
  • Actual
    • S(F);
    • Vars
      • Q(g);CHECK,N_GUARD::S(H),XQ(g)
      • Q(g);SBLOCK,XS(F)::QAR1(C)
      • Q(g);XB(K)::S(F),XQ(g)
      • S(a);N_GUARD,XP(A)::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • Q(g);OGATE::PXQ(g)=Q
      • S(a);N_GUARD::QAB1(C)
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