MESON Chess Problem Database

Problem Display
PID: 133740 (4B3/2p1R3/1pP1n1pp/p1Pk2r1/R7/3N1P2/KQNn1b1B/7b w - - 0 1)

Hirschenson, Aaron

2nd Place, League of Macedonian Problemists, 2002-2003

4B3/2p1R3/1pP1n1pp/p1Pk2r1/R7/3N1P2/KQNn1b1B/7b

#2

11 + 11

23 Die Schwalbe 2009
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qe5#
    • 1...Rg2
      • 2.Qe5#
    • 1...Rg3
      • 2.Qe5#
    • 1...Rg4
      • 2.Qe5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Be1
      • 2.Se3#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bg3
      • 2.Se3#
    • 1...Bh4
      • 2.Se3#
    • 1...Sb1
      • 2.Qb3#
    • 1...Sf1
      • 2.Qb3#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sxf3
      • 2.Qb3#
    • 1...Se4
      • 2.Qb3#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Qxe6#
      • 1...Sxc5
        • 2.Sf4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sd4
        • 2.Rd7#
      • 1...Sf4
        • 2.Rd7#
      • 1...Sg7
        • 2.Rd7#
      • 1...Sd8
        • 2.Rd7#
      • 1...Sf8!
    • 1.Qb3+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sxb3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Rd7#
      • 1...Sxc5
        • 2.Bf7#
      • 1...Bg3
        • 2.Se3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Se4
        • 2.Qc4#
        • 2.Qb3#
      • 1...Sd4
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sg7
        • 2.Sf4#
      • 1...Sd8
        • 2.Sf4#
      • 1...Sf8
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 13
  • Sets
    • R(f);N_GUARD::QAR1(B)
    • R(f);N_GUARD::QAR1(B),XR(f)
    • B(c);N_GUARD::S(C)
    • B(c);N_GUARD::S(C),XB(c)
    • S(b);N_GUARD::QAB(B)
    • S(b);N_GUARD::QAB(B),XS(b)
    • S(b);N_GUARD,XP(F)::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XS(h)
      • Vars
        • S(h);N_GUARD,SBLOCK,XP(H)::S(E)
        • R(f);N_GUARD::QAR1(B),XR(f)
        • S(h);::R(J)
      • Refutation
        • S(h);
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • S(b);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • R(J)
    • Vars
      • S(h);OGATEB,P_SPINS(h),XP(H)::B(K)
      • B(c);N_GUARD::S(C)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(h);N_GUARD::S(E)
      • S(h);N_GUARD::S(E),XS(h)
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