MESON Chess Problem Database

Problem Display
PID: 243130 (B2N4/8/p5PQ/3rp2p/1n1pk1P1/2p3P1/1N1P2K1/8 w - - 0 1)

Armeni, Alberto

Coello-75 JT (Problemas), 2017

B2N4/8/p5PQ/3rp2p/1n1pk1P1/2p3P1/1N1P2K1/8

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.d3#
    • 1...Sc2
      • 2.d3#
    • 1...Sc6
      • 2.d3#
    • 1...d3
      • 2.Qe3#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sc5#
        • 2.Sg5#
      • 1...cxb2
        • 2.Sc5#
      • 1...cxd2
        • 2.Sc5#
      • 1...Sd3
        • 2.Sg5#
      • 1...Sc6
        • 2.Sg5#
        • 2.d3#
      • 1...d3
        • 2.Qe3#
      • 1...hxg4!
    • 1.Sf7?
      • threat
        • 2.Sg5#
        • 2.Sd6#
      • 1...cxd2
        • 2.Sd6#
      • 1...hxg4
        • 2.Sd6#
      • 1...d3
        • 2.Qe3#
      • 1...Sc6
        • 2.Sg5#
        • 2.d3#
      • 1...cxb2!
    • 1.Bxd5+?
      • 1...Sxd5
        • 2.d3#
      • 1...Kxd5!
    • 1.Qg5?
      • threat
        • 2.Qf5#
      • 1...hxg4
        • 2.Qxg4#
      • 1...d3
        • 2.Qe3#
      • 1...cxd2!
    • 1.Qf8?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...cxd2
        • 2.Qf3#
      • 1...d3
        • 2.Qxb4#
      • 1...hxg4!
    • 1.g7?
      • threat
        • 2.Qg6#
        • 2.Qh7#
      • 1...d3
        • 2.Qe3#
      • 1...cxd2!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sc5#
        • 2.Sd6#
      • 1...cxb2
        • 2.Sc5#
      • 1...hxg4
        • 2.Sd6#
      • 1...Rc5
        • 2.Sxc5#
        • 2.Sd6#
      • 1...Rd6
        • 2.Sc5#
        • 2.Sxd6#
      • 1...d3
        • 2.Qe3#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sc6
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::P(B)
    • S(b);N_GUARD,N_SPINR(e)::P(B)
    • P(c);N_GUARD::QAR1(G)
  • Tries
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XS(A)::S(I)
        • P(a);XP(B)::S(I)
        • S(b);::S(I)
        • P(c);N_GUARD::QAR1(G)
      • Refutation
        • P(g);XP(E)
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(B)::S(I)
        • P(g);XP(E)::S(I)
        • P(c);N_GUARD::QAR1(G)
      • Refutation
        • P(a);XS(A)
    • Try
      • B(H);CHECK,XR(e)
      • Vars
        • S(b);SBLOCK,XB(H)::P(B)
      • Refutation
        • K(d);S_FLIGHT,XB(H)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • P(g);OGATE,XP(E)::QAR2(G),XP(g)
        • P(c);N_GUARD::QAR1(G)
      • Refutation
        • P(a);XP(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(B)::QAB1(G)
        • P(c);OGATEB::QAR(G),XS(b)
      • Refutation
        • P(g);XP(E)
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);N_GUARD::QAR1(G)
      • Refutation
        • P(a);XP(B)
  • Actual
    • S(I);N_PINR(e)
    • Threat
      • DUALS(2)
    • Vars
      • P(a);XS(A)::S(I)
      • P(g);XP(E)::S(I)
      • P(c);N_GUARD::QAR1(G)
      • S(b);::S(I)
      • S(b);N_GUARD::P(B)
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