MESON Chess Problem Database

Problem Display
PID: 143617 (4bB2/2K5/8/1pQRnR2/k3r3/8/Pbq5/2rB4 w - - 0 1)

Drese, Gerardus Hendrikus

Probleemblad, 1987

4bB2/2K5/8/1pQRnR2/k3r3/8/Pbq5/2rB4

#2

7 + 8

102 Probleemblad 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qa3#
    • 1...Bc6
      • 2.Qa7#
    • 1...Sc4
      • 2.Qb4#
    • 1...Sc6
      • 2.Qxb5#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Qa7#
      • 1...Ka5
        • 2.Qa7#
      • 1...Bc3
        • 2.Qa3#
      • 1...Bd4
        • 2.Qa3#
        • 2.Qb4#
      • 1...Sc4
        • 2.Qb4#
      • 1...Sc6
        • 2.Qxb5#
      • 1...Bc6+!
    • 1.Bxc2+?
      • 1...Ka5
        • 2.Qb6#
        • 2.Qa7#
      • 1...Rxc2!
    • 1.Rf6?
      • threat
        • 2.Ra6#
      • 1...Bc3
        • 2.Qa3#
      • 1...Bc6
        • 2.Qa7#
      • 1...Sc4
        • 2.Qb4#
      • 1...Sc6
        • 2.Qxb5#
      • 1...Ka5!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Ra8#
      • 1...Ka5
        • 2.Ra8#
      • 1...Bc3
        • 2.Qa3#
      • 1...Bc6
        • 2.Qa7#
      • 1...Sc4
        • 2.Qb4#
      • 1...Sc6
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(b);N_PINQ(C)::QAR1(C)
    • B(h);N_PINQ(C)::QAR(C)
    • S(g);N_PINQ(C)::QAR1(C)
    • S(g);N_PINQ(C)::QAB1(C),XP(f)
  • Tries
    • Try
      • K(F);N_SPINQ(C),P-FLIGHT
      • Threat
        • QAR(C)
      • Vars
        • K(d);N_SPINQ(c),P-FLIGHT,P_SPINP(f)::QAR2(C)
        • B(b);N_GUARD::QAR1(C)
        • S(g);S_CUTR(e)::QAR1(C)
        • S(g);S_CUTB(h)::QAB1(C),XP(f)
      • Refutation
        • B(h);CHECK
    • Try
      • B(A);CHECK,N_SPINQ(C),XQ(c)
      • Refutation
        • R(a);P_PINQ(C),XB(A)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • B(b);N_PINQ(C)::QAR1(C)
        • B(h);N_PINQ(C)::QAR(C)
        • S(g);N_PINQ(C)::QAR1(C)
        • S(g);N_PINQ(C)::QAB1(C),XP(f)
      • Refutation
        • K(d);N_SPINQ(c),P-FLIGHT,P_SPINP(f)
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • K(d);N_SPINQ(c),P-FLIGHT,P_SPINP(f)::R(D)
      • B(b);N_PINQ(C)::QAR1(C)
      • B(h);N_PINQ(C)::QAR(C)
      • S(g);N_PINQ(C)::QAR1(C)
      • S(g);N_PINQ(C)::QAB1(C),XP(f)
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Developed and maintained by Brian Stephenson.
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