MESON Chess Problem Database

Problem Display
PID: 132109 (3k4/np2RK2/1bp1B1p1/2p5/4pN2/1rppPPr1/8/Q2R4 w - - 0 1)

Andrieu, Daniel

Source?, 0000

3k4/np2RK2/1bp1B1p1/2p5/4pN2/1rppPPr1/8/Q2R4

#2

8 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc7
      • 2.Re8#
    • 1...Sb5
      • 2.Qa8#
    • 1...Sc8
      • 2.Rd7#
    • 1...c2
      • 2.Qh8#
    • 1...exf3
      • 2.Rxd3#
  • Tries
    • 1.Qxa7?
      • threat
        • 2.Qb8#
        • 2.Qa8#
      • 1...Ra3
        • 2.Qxb6#
        • 2.Qb8#
      • 1...Bc7
        • 2.Re8#
      • 1...Bxa7!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sxc5#
        • 2.Se5#
      • 1...Rxf3+
        • 2.Sf4#
      • 1...exd3
        • 2.Rxd3#
      • 1...Rb1
        • 2.Sc1#
      • 1...Rb2
        • 2.Sxb2#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Rg1
        • 2.Se1#
      • 1...Rg2
        • 2.Sf2#
      • 1...Rg5
        • 2.Se5#
      • 1...Bc7
        • 2.Re8#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sc8
        • 2.Rd7#
      • 1...c2
        • 2.Qh8#
      • 1...c4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • B(g);SBLOCK::R1(G)
    • S(j);OGATE::QAR(A)
    • S(j);SBLOCK::R1(G)
    • P(b);OGATE::QAR(A)
    • P(e);N_GUARD,XP(D)::R(B),XP(c)
  • Tries
    • Try
      • Q(A);XS(j)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);SBLOCK::R1(G)
      • Refutation
        • B(g);XQ(A)
  • Actual
    • S(E);XP(c)
    • Threat
      • DUALS(8)
    • Vars
      • R(d);CHECK,XP(D)::R(B)+S(E)
      • P(e);OGATE,P_SPINP(e),XS(E)::R(B),XP(e)
      • R(a);::R(B)+S(E)
      • R(a);::R(B)+S(E),XR(a)
      • R(d);::R(B)+S(E)
      • B(g);SBLOCK::R1(G)
      • S(j);OGATE::QAR(A)
      • S(j);SBLOCK::R1(G)
      • P(b);OGATE::QAR(A)
      • P(f);::R(B)+S(E)
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