MESON Chess Problem Database

Problem Display
PID: 15404 (4rb2/8/5R2/qb3N2/B2p2p1/8/1Q2p1RN/r3k2K w - - 0 1)

Kozdon, Baldur

4th Prize, Schach, 1983

4rb2/8/5R2/qb3N2/B2p2p1/8/1Q2p1RN/r3k2K

#2

7 + 9

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qxc1#
    • 1...Ra2
      • 2.Qc1#
    • 1...Ra3
      • 2.Qc1#
    • 1...Rxa4
      • 2.Qc1#
  • Tries
    • 1.Sf3+?
      • 1...Kf1
        • 2.Sg3#
      • 1...gxf3!
    • 1.Se3?
      • threat
        • 2.Rg1#
      • 1...Bc6
        • 2.Qxe2#
      • 1...Qa8!
    • 1.Sxd4?
      • threat
        • 2.Rg1#
      • 1...Qa8
        • 2.Qc3#
      • 1...Bc6!
    • 1.Sd6?
      • threat
        • 2.Rg1#
      • 1...Qa8
        • 2.Qb4#
      • 1...Bc6!
  • Keys
    • 1.Se7!
      • threat
        • 2.Rg1#
      • 1...Bc6
        • 2.Qxe2#
      • 1...Qa8
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::QAR2(B),XR(a)
    • R(a);N_GUARD::QAR2(B)
    • R(a);N_GUARD,XB(E)::QAR2(B)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::S(F)
      • Refutation
        • P(e);XS(D)
    • Try
      • S(F);
      • Threat
        • R(C)
      • Vars
        • B(g);N_GUARD,P_PINR(C)::QAR1(B),XP(c)
      • Refutation
        • Q(f);P_PINR(C)
    • Try
      • S(F);XP(d)
      • Threat
        • R(C)
      • Vars
        • Q(f);N_GUARD,P_PINR(C)::QAB(B)
      • Refutation
        • B(g);P_PINR(C)
    • Try
      • S(F);
      • Threat
        • R(C)
      • Vars
        • Q(f);N_GUARD,P_PINR(C)::QAB(B)
      • Refutation
        • B(g);P_PINR(C)
  • Actual
    • S(F);
    • Threat
      • R(C)
    • Vars
      • B(g);N_GUARD,P_PINR(C)::QAR1(B),XP(c)
      • Q(f);N_GUARD,P_PINR(C)::QAB(B)
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