MESON Chess Problem Database

Problem Display
PID: 96353 (2Q1K3/4P3/2Np4/3k1N2/5R2/B3pp2/3r1p2/2r1q3 w - - 0 1)

Delobel, Bernard

Problemesis, 2004

2Q1K3/4P3/2Np4/3k1N2/5R2/B3pp2/3r1p2/2r1q3

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sxe3#
    • 1...Qf1
      • 2.Sxe3#
    • 1...Qg1
      • 2.Sxe3#
    • 1...Qh1
      • 2.Sxe3#
    • 1...Ra2
      • 2.Rd4#
    • 1...Rb2
      • 2.Rd4#
    • 1...Rc2
      • 2.Rd4#
    • 1...Re2
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...e2
      • 2.Se3#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Qg8#
      • 1...Qg1
        • 2.Sxe3#
      • 1...Rxc6!
    • 1.Sxd6?
      • threat
        • 2.Rf5#
      • 1...Rxc6
        • 2.Qf5#
      • 1...Rc5!
    • 1.Qd7?
      • threat
        • 2.Qxd6#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Rxc6!
  • Keys
    • 1.Sfd4!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Sb4#
      • 1...Rxd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD::S(C),XP(e)
    • R(c);N_GUARD::R1(B)
    • R(c);N_GUARD::R1(B),XR(c)
    • P(e);S_CUTQ(b)::S(C)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • QAB(F)
      • Vars
        • Q(b);N_GUARD::S(C),XP(e)
      • Refutation
        • R(a);XS(D)
    • Try
      • S(C);XP(h)
      • Threat
        • R(B)
      • Vars
        • R(a);SBLOCK,XS(D)::QAR2(F)
      • Refutation
        • R(a);
    • Try
      • Q(F);P_PINP(h)
      • Threat
        • QAR1(F),XP(h)
      • Vars
        • R(c);N_GUARD::R1(B),XR(c)
      • Refutation
        • R(a);XS(D)
  • Actual
    • S(C);
    • Threat
      • QAB1(F)
    • Vars
      • K(g);S_FLIGHT::QAR(F)+S(D)
      • R(c);OGATE,XS(C)::R1(B),XR(c)
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