MESON Chess Problem Database

Problem Display
PID: 108646 (1qR3b1/1N5p/2np1p2/B1r5/Ppkb1QNR/2p5/2P2PBK/3n4 w - - 0 1)

Kiss, Janos

Tafferner, Jozsef

Pat a Mat, 1990

1qR3b1/1N5p/2np1p2/B1r5/Ppkb1QNR/2p5/2P2PBK/3n4

#2

11 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Sxd6#
    • 1...Qa8
      • 2.Sxd6#
    • 1...Qxc8
      • 2.Sxd6#
    • 1...Rd5
      • 2.Bf1#
    • 1...Bd5
      • 2.Bf1#
    • 1...Sb2
      • 2.Se3#
    • 1...Sxf2
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sxa5
      • 2.Sxa5#
    • 1...d5
      • 2.Bf1#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qd3#
      • 1...Sxf2
        • 2.Se3#
      • 1...Be3
        • 2.Sxe3#
        • 2.Se5#
      • 1...Be5
        • 2.Se3#
        • 2.Sxe5#
      • 1...Sb2
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...d5
        • 2.Bf1#
      • 1...Se5!
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Bf1#
      • 1...Qxd6+
        • 2.Sxd6#
      • 1...Be5+
        • 2.Sxe5#
      • 1...Sxf2
        • 2.Se3#
      • 1...Re5
        • 2.Qxb4#
      • 1...Sb2
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Se5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(k);N_GUARD::S(J),XP(h)
    • Q(k);N_GUARD,XR(K)::S(J),XP(h)
    • R(f);P_SPINS(g),SBLOCK::B(C)
    • B(l);SBLOCK::B(C)
    • S(a);N_GUARD::S(G)
    • S(a);N_GUARD,XP(B)::S(G)
    • S(a);N_GUARD::S(G),XS(a)
    • S(g);P_SPINR(f),XB(I)::S(J),XS(g)
    • P(h);P_PINQ(F),SBLOCK::B(C)
  • Tries
    • Try
      • Q(F);N_PINB(e)
      • Threat
        • QAB1(F)
      • Vars
        • S(a);N_GUARD,XP(B)::S(G)
        • S(a);N_GUARD::S(G)
        • S(a);N_GUARD::S(G),XS(a)
        • P(h);P_PINQ(F),SBLOCK::B(C)
      • Refutation
        • S(g);P_SPINR(f)
  • Actual
    • Q(F);N_PINB(e),P_SPINQ(F),XP(h)
    • Threat
      • B(C)
    • Vars
      • Q(k);CHECK,XQ(F)::S(J),XQ(k)
      • B(e);CHECK,N_PINQ(F)::R(H)+S(G),DCHECK,XB(e)
      • S(a);N_GUARD,XP(B)::S(G)
      • R(f);N_PINQ(F),P_SPINS(g)::QAR1(F),XP(c)
      • S(a);N_GUARD::S(G)
      • S(a);N_GUARD::S(G),XS(a)
      • S(g);N_PINQ(F),P_SPINR(f)::QAB(F)
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Developed and maintained by Brian Stephenson.
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