MESON Chess Problem Database

Problem Display
PID: 162484 (6r1/5N2/3NnQ2/8/1p2pp2/1P1k2p1/R7/Kn1BR3 w - - 0 1)

Shire, David J

Sp. Comm., The Problemist, 2016

6r1/5N2/3NnQ2/8/1p2pp2/1P1k2p1/R7/Kn1BR3

#2

8 + 8

56 The Problemist 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Bc2#
    • 1...e3
      • 2.Be2#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Bc2#
        • 2.Be2#
      • 1...e3
        • 2.Bc2#
      • 1...Sa3
        • 2.Be2#
        • 2.Rd2#
      • 1...Sc3
        • 2.Bc2#
        • 2.Rd2#
      • 1...f3
        • 2.Bc2#
        • 2.Re3#
      • 1...Sd4!
    • 1.Sxe4?
      • threat
        • 2.Bc2#
      • 1...Sa3
        • 2.Rd2#
      • 1...Sd4
        • 2.Se5#
      • 1...Rc8!
    • 1.Sb5?
      • threat
        • 2.Se5#
      • 1...e3
        • 2.Qf5#
      • 1...Rg5!
    • 1.Sf5?
      • threat
        • 2.Be2#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc3
        • 2.Se5#
      • 1...f3
        • 2.Re3#
      • 1...e3!
    • 1.Se5+?
      • 1...Kc3
        • 2.Sb5#
      • 1...Kd4!
    • 1.Re3+?
      • 1...fxe3
        • 2.Be2#
      • 1...Kxe3!
    • 1.Qb2?
      • threat
        • 2.Se5#
      • 1...Sc3
        • 2.Qd2#
      • 1...Rg5!
  • Keys
    • 1.Rxe4!
      • threat
        • 2.Be2#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc3
        • 2.Se5#
      • 1...f3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::B(B)
    • P(e);SBLOCK::B(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::B(B)
      • Refutation
        • S(g);
    • Try
      • S(F);XP(e)
      • Threat
        • B(B)
      • Vars
        • S(a);N_GUARD::R1(D)
        • S(g);SBLOCK::S(H)
      • Refutation
        • R(h);
    • Try
      • S(F);
      • Threat
        • S(H)
      • Vars
        • P(e);OGATEB::QAB(G)
      • Refutation
        • R(h);
    • Try
      • S(F);
      • Threat
        • B(B)
      • Vars
        • S(g);N_GUARD::QAR1(G),XS(g)
        • S(a);SBLOCK::S(H)
        • P(f);N_GUARD::R1(C)
      • Refutation
        • P(e);
    • Try
      • S(H);CHECK
      • Vars
        • K(b);P-FLIGHT::S(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • P(f);SBLOCK,XR(C)::B(B)
      • Refutation
        • K(b);P-FLIGHT,XR(C)
    • Try
      • Q(G);
      • Threat
        • S(H)
      • Vars
        • S(a);N_GUARD::QAR1(G)
      • Refutation
        • R(h);
  • Actual
    • R(C);XP(e)
    • Threat
      • B(B)
    • Vars
      • S(g);N_GUARD::QAR1(G),XS(g)
      • S(a);SBLOCK::S(H)
      • P(f);OGATE::QAR2(G),XP(f)
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