MESON Chess Problem Database

Problem Display
PID: 287255 (7Q/3p1P2/3P1BNn/1pK2b2/4k1p1/2R1P3/4n3/r4R2 w - - 0 1)

Alaikov, Venelin

Shakhmatna misl, 1988

7Q/3p1P2/3P1BNn/1pK2b2/4k1p1/2R1P3/4n3/r4R2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qa8#
    • 1...Rc1
      • 2.Qa8#
    • 1...Re1
      • 2.Qa8#
    • 1...Rxf1
      • 2.Qa8#
    • 1...Ra8
      • 2.Qxa8#
    • 1...Bxg6
      • 2.Qe8#
    • 1...Sc1
      • 2.Rf4#
    • 1...Sg1
      • 2.Rf4#
    • 1...Sg3
      • 2.Rf4#
    • 1...Sd4
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sxf7
      • 2.Qh1#
    • 1...Sg8
      • 2.Qh1#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qe5#
      • 1...Rxf1
        • 2.Qa8#
      • 1...Sxf7
        • 2.Qh1#
      • 1...Sxc3!
    • 1.Bh4?
      • threat
        • 2.Qe5#
      • 1...Rxf1
        • 2.Qa8#
      • 1...Bxg6
        • 2.Qe8#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sxf7!
    • 1.Be7?
      • threat
        • 2.Qe5#
      • 1...Rxf1
        • 2.Qa8#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sxf7
        • 2.Qh1#
      • 1...Bxg6!
    • 1.Bd8?
      • threat
        • 2.Qe5#
      • 1...Bxg6
        • 2.Qe8#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sxf7
        • 2.Qh1#
      • 1...Rxf1!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Qe5#
      • 1...Rxf1
        • 2.Qa8#
      • 1...Bxg6
        • 2.Qe8#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sxf7
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD::QAB(I)
    • R(a);N_GUARD,P_PINR(B)::QAB(I)
    • R(a);N_GUARD,XR(A)::QAB(I)
    • R(a);N_GUARD::QAB(I),XR(a)
    • B(f);N_GUARD,XS(G)::QAR(I)
    • S(b);N_GUARD::R1(A)
    • S(b);N_GUARD::R1(A),XS(b)
    • S(g);OGATE,XP(H)::QAB(I)
    • S(g);OGATE::QAB(I)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR1(I)
      • Vars
        • R(a);N_GUARD,XR(A)::QAB(I)
        • S(g);OGATE,XP(H)::QAB(I)
      • Refutation
        • S(b);XR(B)
    • Try
      • B(F);
      • Threat
        • QAR1(I)
      • Vars
        • R(a);N_GUARD,XR(A)::QAB(I)
        • B(f);N_GUARD,XS(G)::QAR(I)
        • S(b);N_GUARD,XR(B)::QAR1(I)
      • Refutation
        • S(g);XP(H)
    • Try
      • B(F);
      • Threat
        • QAR1(I)
      • Vars
        • R(a);N_GUARD,XR(A)::QAB(I)
        • S(b);N_GUARD,XR(B)::QAR1(I)
        • S(g);OGATE,XP(H)::QAB(I)
      • Refutation
        • B(f);XS(G)
    • Try
      • B(F);
      • Threat
        • QAR1(I)
      • Vars
        • B(f);N_GUARD,XS(G)::QAR(I)
        • S(b);N_GUARD,XR(B)::QAR1(I)
        • S(g);OGATE,XP(H)::QAB(I)
      • Refutation
        • R(a);XR(A)
  • Actual
    • B(F);
    • Threat
      • QAR1(I)
    • Vars
      • R(a);N_GUARD,XR(A)::QAB(I)
      • B(f);N_GUARD,XS(G)::QAR(I)
      • S(b);N_GUARD,XR(B)::QAR1(I)
      • S(g);OGATE,XP(H)::QAB(I)
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