MESON Chess Problem Database

Problem Display
PID: 170190 (8/3p3B/3P2nN/3p1q1Q/RN1nkB1R/p5Pb/K1P3P1/2b2r2 w - - 0 1)

Schneider, Matthias

Tages-Anzeiger, 1987

8/3p3B/3P2nN/3p1q1Q/RN1nkB1R/p5Pb/K1P3P1/2b2r2

#2

12 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Qxd5#
      • 2.Qe5#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qf6
      • 2.Qxd5#
    • 1...Qf7
      • 2.Qe5#
    • 1...Qf8
      • 2.Qxd5#
      • 2.Qe5#
  • Tries
    • 1.Qe2+?
      • 1...Be3
        • 2.Qd3#
        • 2.Qxe3#
      • 1...Sxe2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sc5#
      • 1...Qxf4
        • 2.Qe5#
      • 1...Rxf4
        • 2.Qf3#
      • 1...Bxf4
        • 2.Qe2#
      • 1...Sxf4
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(h);OGATE,P_SPINS(i)::QAR1(I),XQ(h)
    • Q(h);OGATE,P_SPINS(i)::QAB1(I),XP(g)
    • Q(h);OGATE,P_SPINS(i)::QAR1(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Refutation
        • S(e);XQ(I)
  • Actual
    • S(F);P_PINS(e)
    • Threat
      • S(F)
    • Vars
      • Q(h);OGATE,P_SPINQ(h),XB(G)::QAR1(I)
      • R(b);N_GUARD,P_SPINR(b),XB(G)::QAB1(I)
      • B(a);N_GUARD,P_SPINB(a),XB(G)::QAR2(I)
      • S(i);OGATE,P_SPINQ(h),XB(G)::QAR(I)
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