MESON Chess Problem Database

Problem Display
PID: 36238 (K5R1/8/2Q4p/4p3/4PkB1/1R6/2b2P2/b3N2q w - - 0 1)

Salazar Lopez, Francisco

Probleemblad, 1976

K5R1/8/2Q4p/4p3/4PkB1/1R6/2b2P2/b3N2q

#2

8 + 6

3771 FIDE Album (1974-1976) 1980
56 The Problemist 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Sxg2#
    • 1...Qf3
      • 2.Rxf3#
    • 1...Qxe1
      • 2.Rf3#
    • 1...Qf1
      • 2.Rf3#
    • 1...Qg1
      • 2.Rf3#
    • 1...Qh2
      • 2.Rf3#
    • 1...Qh4
      • 2.Sg2#
      • 2.Rf3#
    • 1...Qh5
      • 2.Sg2#
      • 2.Rf3#
    • 1...Bd1
      • 2.Sd3#
    • 1...Bxb3
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Rg4#
        • 2.Qf6#
      • 1...Qxf3
        • 2.Rxf3#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Qg2
        • 2.Sxg2#
        • 2.Qf6#
      • 1...Qg1
        • 2.Qf6#
      • 1...Qh4
        • 2.Sg2#
      • 1...Qh5
        • 2.Sg2#
      • 1...h5
        • 2.Qf6#
        • 2.Qh6#
      • 1...Qh3!
    • 1.Rb4?
      • threat
        • 2.Qf6#
      • 1...Qxe4
        • 2.Sg2#
      • 1...Bxe4
        • 2.Sd3#
      • 1...Qh4
        • 2.Sg2#
      • 1...Qh5
        • 2.Sg2#
      • 1...Bd4!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Rf7#
      • 1...Qxe4
        • 2.Qxh6#
      • 1...Bxe4
        • 2.Qc1#
      • 1...Qh4
        • 2.Sg2#
      • 1...Qh5
        • 2.Sg2#
      • 1...Bb3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::S(A),XQ(b)
    • Q(b);N_GUARD::R1(C),XQ(b)
    • Q(b);N_GUARD,XS(A)::R1(C)
    • Q(b);N_GUARD::R1(C)
    • B(c);N_GUARD::S(A)
    • B(c);N_GUARD,XR(C)::S(A)
    • B(c);N_GUARD::S(A),XB(c)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);OGATE,XB(E)::R1(C),XQ(b)
        • B(c);OGATE,P_PINQ(F),XP(D)::QAR1(F),XB(c)
        • Q(b);::QAR2(F)
        • Q(b);N_GUARD::S(A)
      • Refutation
        • Q(b);
    • Try
      • R(C);
      • Threat
        • QAR2(F)
      • Vars
        • Q(b);N_GUARD,P_PINQ(F),P_SPINQ(b),XP(D)::S(A)
        • B(c);N_GUARD,P_PINQ(F),P_SPINB(c),XP(D)::S(A)
        • Q(b);N_GUARD::S(A)
      • Refutation
        • B(a);
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • Q(b);N_GUARD,SBLOCK,XP(D)::QAB(F),XP(f)
      • B(c);OGATE,SBLOCK,XP(D)::QAB(F)
      • Q(b);N_GUARD::S(A)
      • B(c);N_GUARD::S(A)
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