MESON Chess Problem Database

Problem Display
PID: 23773 (8/K1p2Q2/5p2/p5r1/2PBB3/1P2R2p/k7/1N5R w - - 0 1)

Barnes, Barry Peter

2nd Prize, Sakkelet, 1996

8/K1p2Q2/5p2/p5r1/2PBB3/1P2R2p/k7/1N5R

#2

9 + 6

4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Rh2#
    • 1...Rc5
      • 2.Rh2#
    • 1...Rd5
      • 2.Rh2#
    • 1...Re5
      • 2.Rh2#
    • 1...Rh5
      • 2.Rh2#
  • Tries
    • 1.Qe8?
      • threat
        • 2.Qa4#
      • 1...Rb5
        • 2.Rh2#
      • 1...a4
        • 2.Qxa4#
      • 1...c6!
    • 1.Qd7?
      • threat
        • 2.Qa4#
      • 1...Rb5
        • 2.Rh2#
      • 1...a4
        • 2.Qxa4#
      • 1...c6!
    • 1.Qe7?
      • threat
        • 2.Qa3#
      • 1...Rc5
        • 2.Rh2#
      • 1...c5!
    • 1.Qf8?
      • threat
        • 2.Qa3#
      • 1...Rc5
        • 2.Rh2#
      • 1...c5!
    • 1.b4?
      • threat
        • 2.Ra3#
      • 1...Rg3
        • 2.c5#
      • 1...axb4!
    • 1.c5?
      • threat
        • 2.Re2#
      • 1...Rg2
        • 2.b4#
      • 1...Rd5
        • 2.Rh2#
      • 1...Rxc5!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qe2#
      • 1...Rxh5
        • 2.Rh2#
      • 1...Rg2
        • 2.Qxa5#
      • 1...Rg4
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::R(B)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • R(d);N_GUARD::R(B)
        • P(c);::QAR2(I),XP(c)
      • Refutation
        • P(f);
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • R(d);N_GUARD::R(B)
        • P(c);::QAR2(I),XP(c)
      • Refutation
        • P(f);
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • R(d);N_GUARD::R(B)
      • Refutation
        • P(f);
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • R(d);N_GUARD::R(B)
      • Refutation
        • P(f);
    • Try
      • P(C);
      • Threat
        • R1(D)
      • Vars
        • R(d);N_GUARD::QAB(I)+P(E)
      • Refutation
        • P(c);XP(C)
    • Try
      • P(E);
      • Threat
        • R(D)
      • Vars
        • R(d);N_GUARD::QAB(I)+P(C)
        • R(d);N_GUARD::R(B)
      • Refutation
        • R(d);XP(E)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)
    • Vars
      • R(d);N_GUARD,XQ(I)::R(B)
      • R(d);OGATE::QAR(I),XP(c)
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