MESON Chess Problem Database

Problem Display
PID: 34973 (6R1/1q4p1/4NB1p/1p2N1Pk/5Rp1/3b2P1/1K3P2/1Qn5 w - - 0 1)

Reitman, Mark

Probleemblad, 1992

6R1/1q4p1/4NB1p/1p2N1Pk/5Rp1/3b2P1/1K3P2/1Qn5

#2

10 + 8

3657 Izbrannie Shakhmatnie Zadachi Marka Reitmana 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sxg7#
    • 1...Qg2
      • 2.Sxg7#
    • 1...Qf3
      • 2.Sxg7#
    • 1...Qe4
      • 2.Sxg7#
    • 1...Qd5
      • 2.Sxg7#
    • 1...Qa6
      • 2.Sxg7#
    • 1...Qc6
      • 2.Sxg7#
    • 1...Qa8
      • 2.Sxg7#
    • 1...Qc8
      • 2.Sxg7#
    • 1...Qb6
      • 2.Sxg7#
    • 1...Qb8
      • 2.Sxg7#
    • 1...Bf1
      • 2.Qg6#
    • 1...Be2
      • 2.Qg6#
    • 1...Bc4
      • 2.Qg6#
    • 1...Bg6
      • 2.Qxg6#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Sf4#
      • 1...Qxf3
        • 2.Sxg7#
      • 1...Qe4
        • 2.Sxg7#
      • 1...Se2
        • 2.Qh1#
      • 1...hxg5!
    • 1.Rxg4?
      • threat
        • 2.Sf4#
        • 2.Rh4#
      • 1...Se2
        • 2.Rh4#
      • 1...Qh1
        • 2.Sf4#
        • 2.Sxg7#
      • 1...Qf3
        • 2.Sxg7#
        • 2.Rh4#
      • 1...Qe4
        • 2.Sxg7#
      • 1...hxg5!
    • 1.Rf5?
      • threat
        • 2.Sf4#
      • 1...hxg5
        • 2.Rh8#
      • 1...Qf3
        • 2.Sxg7#
      • 1...Qe4
        • 2.Sxg7#
      • 1...Se2!
  • Keys
    • 1.Re4!
      • threat
        • 2.Sf4#
      • 1...Qxe4
        • 2.Sxg7#
      • 1...hxg5
        • 2.Rh8#
      • 1...Se2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • Q(g);N_GUARD::S(H),XP(h)
    • Q(g);N_GUARD,P_PINP(C)::S(H),XP(h)
    • Q(g);N_GUARD,SBLOCK::S(H),XP(h)
    • B(b);OGATE::QAB1(A)
    • B(b);OGATE::QAB1(A),XB(b)
  • Tries
    • Try
      • R(E);
      • Threat
        • S(H)
      • Vars
        • Q(g);N_GUARD,XR(E)::S(H),XP(h)
        • Q(g);N_GUARD::S(H),XP(h)
        • S(a);OGATE::QAR(A)
      • Refutation
        • P(f);XP(G)
    • Try
      • R(E);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R1(E)
        • Q(g);N_GUARD::S(H),XP(h)
      • Refutation
        • P(f);XP(G)
    • Try
      • R(E);
      • Threat
        • S(H)
      • Vars
        • P(f);OGATEB,P_SPINP(f),XP(G)::R(J)
        • Q(g);N_GUARD::S(H),XP(h)
      • Refutation
        • S(a);
  • Actual
    • R(E);
    • Threat
      • S(H)
    • Vars
      • Q(g);N_GUARD,XR(E)::S(H),XP(h)
      • P(f);OGATEB,XP(G)::R(J)
      • S(a);OGATE::QAR(A)
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