MESON Chess Problem Database

Problem Display
PID: 107721 (7b/1Brbp3/8/1n6/RP1k4/NpnNpP2/7K/B2R2Q1 w - - 0 1)

Benedek, Attila

Sp. Prize, Roscher MT, 1978

7b/1Brbp3/8/1n6/RP1k4/NpnNpP2/7K/B2R2Q1

#2

10 + 9

14674 Attila Benedek - That's All 2007
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.bxc5#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Be8
      • 2.Qg4#
    • 1...Be5+
      • 2.Sf4#
    • 1...e5
      • 2.Sc1#
      • 2.Se1#
      • 2.Sf2#
      • 2.Sf4#
      • 2.Sc5#
    • 1...e6
      • 2.Qg4#
  • Tries
    • 1.Sc2+?
      • 1...Kc4
        • 2.Sb2#
      • 1...bxc2!
    • 1.Sxb5+?
      • 1...Bxb5
        • 2.Qg4#
      • 1...Kc4!
    • 1.Qg7+?
      • 1...e5
        • 2.Sc1#
        • 2.Se1#
        • 2.Sf2#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sxe5#
      • 1...Bxg7!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Be5+
        • 2.Sf4#
      • 1...Rxb7
        • 2.Qc4#
      • 1...e2
        • 2.Qg1#
      • 1...Rc5
        • 2.bxc5#
      • 1...Rc6
        • 2.Sxb5#
      • 1...Bc6
        • 2.Qc4#
      • 1...Be6
        • 2.Qxh8#
      • 1...b2
        • 2.Sc2#
      • 1...e6
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(f);OGATE::R(H)+P(I),XR(f)
    • B(g);N_GUARD::QAR(C),XB(g)
    • B(g);N_GUARD::QAR(C)
    • B(i);CHECK,SBLOCK::R(B)+S(F)
    • P(h);S_CUTB(g)::QAR(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);N_SPINP(c),N_SPINS(b),P-FLIGHT::S(F)
      • Refutation
        • P(a);XS(E)
    • Try
      • S(E);CHECK,XS(e)
      • Vars
        • B(g);XS(E)::QAR(C)
      • Refutation
        • K(d);N_SPINP(c),N_SPINS(b),P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Refutation
        • B(i);XQ(C)
  • Actual
    • Q(C);N_PINP(c)
    • Threat
      • QAR1(C)
    • Vars
      • B(i);CHECK,SBLOCK::R(B)+S(F)
      • R(f);N_GUARD,XB(J)::QAR1(C)
      • P(c);OGATEB::QAB(C)
      • R(f);OGATE::R(H)+P(I),XR(f)
      • R(f);S_CUTB(g)::S(E),XS(e)
      • B(g);S_CUTR(f)::QAR1(C)
      • B(g);S_CUTP(h)::QAB(C),XB(i)
      • P(a);N_GUARD,N_SPINS(b)::S(E)
      • P(h);S_CUTB(g)::QAR(C)
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