MESON Chess Problem Database

Problem Display
PID: 249173 (2rrb3/1p6/1Kp5/B1pP1P2/2k1p1N1/1pP5/4P1n1/Q7 w - - 0 1)

Seider, Shlomo

Schakend Nederland, 1981

2rrb3/1p6/1Kp5/B1pP1P2/2k1p1N1/1pP5/4P1n1/Q7

#2

8 + 10

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Qa4#
    • 1...Se1
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sf4
      • 2.Se3#
    • 1...Sh4
      • 2.Se3#
    • 1...b2
      • 2.Qa2#
    • 1...cxd5
      • 2.Se5#
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qxc5#
      • 1...Kxd5
        • 2.Qxc5#
      • 1...Rxd5
        • 2.Qa4#
      • 1...cxd5
        • 2.Se5#
      • 1...b2
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(i);SBLOCK,XP(F)::QAR2(A)
    • S(a);N_GUARD::S(D)
    • S(a);N_GUARD::S(D),XS(a)
    • P(b);OGATEB::QAB(A)
    • P(f);SBLOCK,XP(F)::S(D)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(e)
    • Vars
      • K(c);S_FLIGHT,XP(F)::QAR1(A),XP(e)
      • R(i);SBLOCK,XP(F)::QAR2(A)
      • P(f);SBLOCK,XP(F)::S(D)
      • P(b);OGATEB::QAB(A)
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