MESON Chess Problem Database

Problem Display
PID: 99454 (8/4B3/1RnK4/bB3pP1/Pk1n3Q/rP6/1Pprp3/2N5 w - - 0 1)

Zelend, Istvan

Magyar Sakkelet, 1981

8/4B3/1RnK4/bB3pP1/Pk1n3Q/rP6/1Pprp3/2N5

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Sa2#
    • 1...Se5
      • 2.Kd5#
      • 2.Kxe5#
      • 2.Kc7#
    • 1...Sa7
      • 2.Kd5#
      • 2.Ke5#
      • 2.Kc7#
      • 2.Kd7#
    • 1...Sb8
      • 2.Kd5#
      • 2.Ke5#
      • 2.Kc7#
    • 1...Sd8
      • 2.Kd5#
      • 2.Ke5#
      • 2.Kc7#
      • 2.Kd7#
  • Tries
    • 1.Qxd4+?
      • 1...Sxd4
        • 2.Kd5#
        • 2.Ke5#
        • 2.Kc7#
        • 2.Kd7#
      • 1...Rxd4+!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qxd2#
      • 1...Sxb3+
        • 2.Sd3#
      • 1...Sf3+
        • 2.Kxc6#
      • 1...Sxb5+
        • 2.Kxc6#
      • 1...Rxb3
        • 2.Sa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,SBLOCK,XP(C)::S(A)
  • Tries
    • Try
      • Q(E);CHECK,P_SPINQ(E),XS(f)
      • Refutation
        • R(b);CHECK,XQ(E)
  • Actual
    • Q(E);N_PINS(f),P_PINR(b)
    • Threat
      • QAB(E),XR(b)
    • Vars
      • S(f);CHECK,SBLOCK,XP(C)::S(A)
      • S(f);CHECK::B(J)+K(I),XS(i)
      • S(f);CHECK,P_SPINS(f),XB(F)::B(J)+K(I),XS(i)
      • R(d);N_GUARD,SBLOCK,XP(C)::S(A)
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