MESON Chess Problem Database

Problem Display
PID: 31123 (6nr/Q7/1q1p3p/pp1RPp2/n4k1P/7P/3K1PB1/5R2 w - - 0 1)

Modlitba, Zdenek

2nd HM., Moravskoslezsky sach, 1995-1996

6nr/Q7/1q1p3p/pp1RPp2/n4k1P/7P/3K1PB1/5R2

#2

9 + 10

3432 Czech Album (1995-1997) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf2+
      • 2.Qxf2#
    • 1...Qe3+
      • 2.Qxe3#
    • 1...Qd4+
      • 2.Qxd4#
    • 1...Qc7
      • 2.Qe3#
      • 2.Qd4#
    • 1...Qd8
      • 2.Qe3#
      • 2.Qd4#
    • 1...Qa6
      • 2.Qe3#
      • 2.Qd4#
    • 1...Qc6
      • 2.Qe3#
      • 2.Qd4#
    • 1...Qb7
      • 2.Qe3#
      • 2.Qd4#
    • 1...Qb8
      • 2.Qe3#
      • 2.Qd4#
  • Tries
    • 1.Rd4+?
      • 1...Qxd4+
        • 2.Qxd4#
      • 1...Kxe5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qg3#
      • 1...Qxf2+
        • 2.Rxf2#
      • 1...Qe3+
        • 2.fxe3#
      • 1...Qd4+
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(f);CHECK,OGATE,P_SPINQ(f),XP(C)::QAR2(I),XQ(f)
    • Q(f);CHECK,OGATE::QAB1(I),XQ(f)
    • Q(f);CHECK,OGATE::QAR2(I),XQ(f)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • Q(f);CHECK,OGATE,XR(G)::QAR2(I),XQ(f)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • Q(f);CHECK,OGATE,P_SPINQ(f),XP(C)::R(A),XQ(f)
      • Q(f);CHECK,OGATE::R(A)+P(C)DCHECK,XQ(f)
      • Q(f);CHECK,N_GUARD::R(G),XQ(f)
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