MESON Chess Problem Database

Problem Display
PID: 104424 (q1b5/pQ6/R3nppK/2p1k3/2P2R1p/3pN3/3n1B2/7B w - - 0 1)

Mladenovic, Slobodan

Sahovski Glasnik, 1969

q1b5/pQ6/R3nppK/2p1k3/2P2R1p/3pN3/3n1B2/7B

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Re4#
    • 1...Sf1
      • 2.Re4#
    • 1...Sb3
      • 2.Re4#
    • 1...Sf3
      • 2.Re4#
    • 1...Sxc4
      • 2.Re4#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sd4
      • 2.Qc7#
    • 1...Sxf4
      • 2.Qb2#
    • 1...Sg5
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sg7
      • 2.Qc7#
    • 1...Sd8
      • 2.Qc7#
    • 1...Sf8
      • 2.Qc7#
  • Tries
    • 1.Rf5+?
      • 1...Kd4
        • 2.Qb2#
      • 1...gxf5!
    • 1.Rxe6+?
      • 1...Kxf4
        • 2.Qc7#
      • 1...Bxe6
        • 2.Qc7#
      • 1...Kxe6!
    • 1.Qd5+?
      • 1...Kxf4
        • 2.Qd6#
      • 1...Qxd5!
    • 1.Qb2+?
      • 1...Kxf4
        • 2.Qxf6#
      • 1...Sd4!
    • 1.Qb8+?
      • 1...Sc7
        • 2.Qxc7#
      • 1...Qxb8!
  • Keys
    • 1.Rxf6!
      • threat
        • 2.Sg4#
      • 1...Kd4
        • 2.Qb2#
      • 1...Kxf6
        • 2.Qg7#
      • 1...Sd4
        • 2.Qc7#
      • 1...Sf4
        • 2.Qb2#
      • 1...Sg5
        • 2.Qb2#
      • 1...Sc7
        • 2.Qb2#
      • 1...Sg7
        • 2.Qb2#
      • 1...Sd8
        • 2.Qb2#
      • 1...Sf8
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::R1(E)
    • S(a);N_GUARD,XP(D)::R1(E)
    • S(a);N_GUARD::R1(E),XS(a)
    • S(f);N_GUARD::QAB(H)
    • S(f);N_GUARD,SBLOCK,XR(E)::QAB(H)
    • S(f);N_GUARD::QAB(H),XS(f)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(H)
      • Refutation
        • P(h);XR(E)
    • Try
      • R(F);CHECK,XS(f)
      • Vars
        • K(e);S_FLIGHT,XR(E)::QAB(H)
        • B(k);SBLOCK,XR(F)::QAB(H)
      • Refutation
        • K(e);P-FLIGHT,XR(F)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(E)::QAB(H)
      • Refutation
        • Q(j);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT,XR(E)::QAR2(H),XP(g)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(H);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB(H),XS(f)
      • Refutation
        • Q(j);XQ(H)
  • Actual
    • R(E);XP(g)
    • Threat
      • S(C)
    • Vars
      • K(e);S_FLIGHT::QAB(H)
      • K(e);OGATEB,P_SPINS(f),S_FLIGHT,XR(E)::QAB1(H)
      • S(f);N_GUARD,SBLOCK::QAB(H)
      • S(f);N_GUARD::QAB(H)
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Developed and maintained by Brian Stephenson.
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