MESON Chess Problem Database

Problem Display
PID: 23287 (8/q1P5/Qb3p2/1r5R/4kP1n/1B3p1N/2pR1Bn1/1bK5 w - - 0 1)

Shire, David J

2nd Prize, The Problemist, 1997/I

8/q1P5/Qb3p2/1r5R/4kP1n/1B3p1N/2pR1Bn1/1bK5

#2

9 + 10

4849 The Sushkov Theme 1999
3256 David Shire Selected Chess Problems 2001
102 Probleemblad 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Bd5#
      • 2.Qd3#
    • 1...Ra5
      • 2.Qd3#
    • 1...Rc5
      • 2.Rd4#
      • 2.Qd3#
    • 1...Rd5
      • 2.Bxd5#
    • 1...Re5
      • 2.Qd3#
    • 1...Rf5
      • 2.Qd3#
    • 1...Rg5
      • 2.Qd3#
    • 1...Rxh5
      • 2.Qd3#
    • 1...Ba2
      • 2.Bxc2#
    • 1...Bc5
      • 2.Bd5#
      • 2.Qc6#
      • 2.Qe6#
  • Tries
    • 1.Rc5?
      • threat
        • 2.Rd4#
      • 1...Rxc5
        • 2.Qd3#
      • 1...Bxc5
        • 2.Qe6#
      • 1...Rb4
        • 2.Qd3#
      • 1...Sf5
        • 2.Bd5#
      • 1...Se3!
    • 1.Re5+?
      • 1...Rxe5
        • 2.Qd3#
      • 1...fxe5!
    • 1.Qb7+?
      • 1...Rd5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Qxb7!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Bd5#
      • 1...Rxb3
        • 2.Qc4#
      • 1...Rxc5
        • 2.Qd3#
      • 1...Bxc5
        • 2.Qe6#
      • 1...Sxf4
        • 2.Sf2#
      • 1...Qb7
        • 2.Qxb7#
      • 1...Qa8
        • 2.Qxa8#
      • 1...Ba2
        • 2.Bxc2#
      • 1...Se3
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(g);OGATE::QAB1(H)
    • R(g);N_GUARD::B(D),XR(g)
    • R(g);OGATE,XR(G)::QAB1(H)
    • B(a);N_GUARD::B(D),XP(b)
  • Tries
    • Try
      • R(G);
      • Threat
        • R1(B)
      • Vars
        • R(g);OGATE,XR(G)::QAB1(H)
        • B(h);OGATE,XR(G)::QAR2(H)
        • R(g);OGATE::QAB1(H)
        • S(f);SBLOCK::B(D)
      • Refutation
        • S(c);
    • Try
      • R(G);CHECK
      • Vars
        • R(g);OGATE,XR(G)::QAB1(H)
      • Refutation
        • P(i);XR(G)
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(j);XQ(H)
  • Actual
    • B(C);
    • Threat
      • B(D)
    • Vars
      • R(g);OGATE,XB(D)::QAR2(H)
      • R(g);OGATE,XB(C)::QAB1(H)
      • B(h);OGATE,XB(C)::QAR2(H)
      • S(c);SBLOCK,XP(F)::S(E)
      • Q(j);N_GUARD::QAB(H),XQ(j)
      • Q(j);OGATE::QAB(H),XQ(j)
      • B(a);N_GUARD::B(D),XP(b)
      • S(c);SBLOCK::R1(B)
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