MESON Chess Problem Database

Problem Display
PID: 169903 (K1R5/pP3N2/6q1/r2PP2N/p3k3/1pPRB2B/2PnP3/3r4 w - - 0 1)

Breu Noguera, Jorge

SEPA, 1945

K1R5/pP3N2/6q1/r2PP2N/p3k3/1pPRB2B/2PnP3/3r4

#2

13 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Sg3#
    • 1...Qh7
      • 2.Sg3#
      • 2.Sf6#
    • 1...Qg1
      • 2.Sf6#
    • 1...Qg2
      • 2.Sf6#
    • 1...Qg3
      • 2.Sxg3#
      • 2.Sf6#
    • 1...Qa6
      • 2.Sg3#
    • 1...Qb6
      • 2.Sg3#
    • 1...Qc6
      • 2.Sg3#
    • 1...Qd6
      • 2.Sg3#
    • 1...Qe6
      • 2.Sg3#
    • 1...Qf6
      • 2.Sg3#
      • 2.Sxf6#
    • 1...Qh6
      • 2.Sg3#
    • 1...Qg8
      • 2.Sf6#
    • 1...Sb1
      • 2.Rc4#
    • 1...Sf1
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
  • Tries
    • 1.Sg5+?
      • 1...Kxe5
        • 2.Bf4#
      • 1...Qxg5!
    • 1.Sd6+?
      • 1...Kxe5
        • 2.Bf4#
      • 1...Qxd6!
    • 1.Bf5+?
      • 1...Qxf5
        • 2.Sg3#
      • 1...Kxf5!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Rd4#
      • 1...Rxd5
        • 2.Re3#
      • 1...Qg4
        • 2.Sd6#
      • 1...Qg1
        • 2.Sd6#
      • 1...Qb6
        • 2.Sg5#
      • 1...Sb1
        • 2.Rc4#
      • 1...Sf1
        • 2.Rc4#
      • 1...Sf3
        • 2.exf3#
      • 1...Sc4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_GUARD::S(I)
    • Q(g);N_GUARD,P_PINP(J)::S(I)
    • Q(g);N_GUARD,P_PINR(M)::S(I)
    • S(b);N_GUARD::R(M)
    • S(b);N_GUARD::R(M),XS(b)
  • Tries
    • Try
      • S(K);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(H)::B(E)
      • Refutation
        • Q(g);XS(K)
    • Try
      • S(K);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(H)::B(E)
      • Refutation
        • Q(g);XS(K)
    • Try
      • B(F);CHECK
      • Vars
        • Q(g);XB(F)::S(I)
      • Refutation
        • K(e);S_FLIGHT,XB(F)
  • Actual
    • B(E);
    • Threat
      • R1(D)
    • Vars
      • R(f);SBLOCK,XP(G)::R1(D)
      • Q(g);N_GUARD::S(K)
      • S(b);N_GUARD::R(M)
      • S(b);OGATE::P(B),XS(b)
      • S(b);N_GUARD::R(M),XS(b)
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