MESON Chess Problem Database

Problem Display
PID: 227815 (n1NQqb1N/2n1p1p1/p3BpP1/R1ppkP2/8/4K3/8/8 w - - 0 1)

Talaber, Laszlo

Uj Nemezdek, 1926

n1NQqb1N/2n1p1p1/p3BpP1/R1ppkP2/8/4K3/8/8

#2

8 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Sf7#
    • 1...Qb5
      • 2.Sf7#
    • 1...Qc6
      • 2.Sf7#
    • 1...Qxg6
      • 2.Sxg6#
    • 1...Qd7
      • 2.Sf7#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qxd8
      • 2.Sf7#
    • 1...Sb5
      • 2.Qxd5#
    • 1...Sb6
      • 2.Qxc7#
    • 1...d4+
      • 2.Qxd4#
  • Tries
    • 1.Rxc5?
      • 1...Qxg6
        • 2.Sxg6#
      • 1...Qxd8
        • 2.Sf7#
      • 1...Sxe6
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Qa4
        • 2.Sf7#
      • 1...Qb5
        • 2.Sf7#
      • 1...Qc6
        • 2.Sf7#
      • 1...Qd7
        • 2.Sf7#
      • 1...Qf7
        • 2.Sxf7#
      • 1...Sb5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Sb6
        • 2.Qxc7#
      • 1...a5!
    • 1.Qd7?
      • 1...d4+
        • 2.Qxd4#
      • 1...Qxg6
        • 2.Sxg6#
      • 1...Qxd7
        • 2.Sf7#
      • 1...Qxc8
        • 2.Sf7#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Qf7
        • 2.Sxf7#
      • 1...Qd8
        • 2.Sf7#
      • 1...Sb5
        • 2.Qxd5#
      • 1...Sb6
        • 2.Qxc7#
      • 1...c4!
  • Keys
    • 1.Sb6!
      • 1...d4+
        • 2.Qxd4#
      • 1...Qxg6
        • 2.Sxg6#
      • 1...Qxd8
        • 2.Sf7#
      • 1...Sxe6
        • 2.Qxd5#
      • 1...Sxb6
        • 2.Qxc7#
      • 1...Qd7
        • 2.Sf7#
      • 1...Qa4
        • 2.Sf7#
      • 1...Qb5
        • 2.Sf7#
      • 1...Qc6
        • 2.Sf7#
      • 1...Qf7
        • 2.Sxf7#
      • 1...Sb5
        • 2.Qxd5#
      • 1...c4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(j);N_GUARD::S(H)
    • Q(j);XP(E)::S(H),XQ(j)
    • Q(j);N_GUARD::S(H),XQ(j)
    • Q(j);N_GUARD,XQ(G)::S(H)
    • S(f);N_GUARD::QAR1(G),XP(b)
    • S(i);N_GUARD::QAB(G),XS(f)
    • P(b);CHECK,OGATE,P_SPINP(a)::QAB1(G),XP(b)
  • Tries
    • Try
      • R(B);P_PINP(b),XP(a)
      • Vars
        • Q(j);XP(E)::S(H),XQ(j)
        • Q(j);N_GUARD,XQ(G)::S(H)
        • Q(j);N_GUARD::S(H)
        • Q(j);N_GUARD::S(H),XQ(j)
        • S(i);N_GUARD::QAB(G),XS(f)
      • Refutation
        • P(d);
    • Try
      • Q(G);
      • Vars
        • P(b);CHECK,OGATE,P_SPINP(a)::QAB1(G),XP(b)
        • Q(j);XP(E)::S(H),XQ(j)
        • Q(j);N_GUARD,XQ(G)::S(H)
        • Q(j);N_GUARD,XS(F)::S(H)
        • S(f);OGATE,XB(D)::QAR1(G),XS(f)
        • Q(j);N_GUARD::S(H),XQ(j)
        • Q(j);N_GUARD::S(H)
        • S(f);N_GUARD::QAR1(G),XP(b)
        • S(i);N_GUARD::QAB(G),XS(f)
      • Refutation
        • P(a);P_SPINP(b)
  • Actual
    • S(F);
    • Vars
      • P(b);CHECK,OGATE,P_SPINP(a)::QAB1(G),XP(b)
      • Q(j);XP(E)::S(H),XQ(j)
      • Q(j);N_GUARD,XQ(G)::S(H)
      • S(f);N_GUARD,XB(D)::QAR1(G),XP(b)
      • S(i);N_GUARD,XS(F)::QAB(G),XS(f)
      • Q(j);N_GUARD::S(H)
      • Q(j);N_GUARD::S(H),XQ(j)
      • S(f);N_GUARD::QAR1(G),XP(b)
      • P(a);P_SPINP(b)::S(F),XP(a)
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