MESON Chess Problem Database

Problem Display
PID: 104606 (n1b3K1/8/2P1k3/RN4B1/1pP1P1P1/1p2n1N1/3R4/4QBb1 w - - 0 1)

Subotic, Miroslav

Mezija, 1994

n1b3K1/8/2P1k3/RN4B1/1pP1P1P1/1p2n1N1/3R4/4QBb1

#2

12 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.exd5#
    • 1...Sf5
      • 2.exf5#
    • 1...Sb6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qf6#
      • 1...Ke5
        • 2.Qf6#
      • 1...Sxg4
        • 2.Qf5#
      • 1...Sd5
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Bxf2!
    • 1.Qa1?
      • threat
        • 2.Rd6#
        • 2.Qf6#
      • 1...Sxc4
        • 2.Bxc4#
        • 2.Qf6#
      • 1...Sxg4
        • 2.Rd6#
      • 1...Sd5
        • 2.cxd5#
        • 2.exd5#
      • 1...Sf5
        • 2.Qf6#
        • 2.exf5#
        • 2.gxf5#
      • 1...b2!
  • Keys
    • 1.e5!
      • threat
        • 2.Sd4#
      • 1...Kxe5
        • 2.Sc7#
      • 1...Sxf1
        • 2.Rd6#
      • 1...Sxc4
        • 2.Bxc4#
      • 1...Sxg4
        • 2.Rd6#
      • 1...Sd1
        • 2.Rd6#
      • 1...Sc2
        • 2.Rd6#
      • 1...Sg2
        • 2.Rd6#
      • 1...Sd5
        • 2.cxd5#
      • 1...Sf5
        • 2.gxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • S(c);OGATE::QAR(A)+P(F)DCHECK,XS(c)
    • S(f);N_GUARD::S(I)
    • S(f);N_GUARD::S(I),XS(f)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(e);P-FLIGHT::QAB1(A)
        • S(c);N_GUARD,XP(G)::QAB1(A)
        • S(c);N_GUARD::QAB1(A)
        • S(c);N_GUARD::QAB1(A),XS(c)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(G)::R1(C)
      • Refutation
        • P(b);
  • Actual
    • P(F);
    • Threat
      • S(I)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(c),XP(F)::R(H)+S(I)
      • S(c);XB(B)::R1(C)
      • S(c);OGATE,XP(E)::B(B),XS(c)
      • S(c);XP(G)::R1(C)
      • S(c);::R1(C)
      • S(c);OGATE::P(E),XS(c)
      • S(c);OGATE::P(G),XS(c)
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