MESON Chess Problem Database

Problem Display
PID: 178245 (5r1b/3pN2B/8/4pq2/1p2kN1p/1K2P3/2P1QBnn/8 w - - 0 1)

Karatsa, Atanas

Vratnica-64, 2009

5r1b/3pN2B/8/4pq2/1p2kN1p/1K2P3/2P1QBnn/8

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Bxf5#
    • 1...Rb8
      • 2.Bxf5#
    • 1...Rc8
      • 2.Bxf5#
    • 1...Rd8
      • 2.Bxf5#
    • 1...Re8
      • 2.Bxf5#
    • 1...Rg8
      • 2.Bxf5#
    • 1...Bf6
      • 2.Bxf5#
    • 1...Sxe3
      • 2.Qxe3#
    • 1...Sf3
      • 2.Qd3#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sc5#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Rc8
        • 2.Bxf5#
      • 1...d6!
    • 1.Se6?
      • threat
        • 2.Sc5#
        • 2.Sg5#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Rc8
        • 2.Sg5#
        • 2.Bxf5#
      • 1...Rg8
        • 2.Sc5#
        • 2.Bxf5#
      • 1...Bf6
        • 2.Sc5#
        • 2.Bxf5#
      • 1...Sf3
        • 2.Sc5#
        • 2.Qd3#
      • 1...d6
        • 2.Sg5#
      • 1...dxe6!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Sg5#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Rg8
        • 2.Bxf5#
      • 1...Bf6
        • 2.Bxf5#
      • 1...Sf3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(i);N_GUARD::B(H),XQ(g)
    • B(j);S_CUTR(i)::B(H),XQ(g)
    • S(a);OGATE,P_SPINS(a),XP(E)::QAR1(B),XS(a)
    • S(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(E)::QAR1(B),XS(a)
        • R(i);N_GUARD::B(H),XQ(g)
      • Refutation
        • P(h);
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(E)::QAR1(B),XS(a)
        • P(h);::S(F)
      • Refutation
        • P(h);XS(F)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(a);OGATE,P_SPINS(a),XP(E)::QAR1(B),XS(a)
      • R(i);N_GUARD::B(H),XQ(g)
      • B(j);S_CUTR(i)::B(H),XQ(g)
      • S(b);SBLOCK::QAB1(B)
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