MESON Chess Problem Database

Problem Display
PID: 18377 (2Bb4/5N2/1p3n2/r2R1P2/3Nk3/p1R5/4P2r/K4Qn1 w - - 0 1)

Ellerman, Arnoldo

5th Prize, Main-Post, 1955

2Bb4/5N2/1p3n2/r2R1P2/3Nk3/p1R5/4P2r/K4Qn1

#2

9 + 8

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qf3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Rd4#
      • 1...Rxd5
        • 2.Sg5#
      • 1...Sxe2
        • 2.Qf3#
      • 1...Sxd5
        • 2.Sd6#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Ra4
        • 2.Re5#
      • 1...Kxd5!
    • 1.Se6?
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Rxd5
        • 2.Qf4#
      • 1...Sxe2
        • 2.Qf3#
      • 1...Sxd5
        • 2.Qb1#
      • 1...Ra4
        • 2.Re5#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Rf2!
    • 1.Qg2+?
      • 1...Kf4
        • 2.Se6#
        • 2.e3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Rxg2!
    • 1.Qf4+?
      • 1...Kxd5
        • 2.Be6#
        • 2.Bb7#
        • 2.Qe5#
      • 1...Kxf4!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Rxd5
        • 2.Re3#
      • 1...Sxe2
        • 2.Qf3#
      • 1...Sxd5
        • 2.Rc4#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Ra4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD,XP(C)::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(a);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(F)
      • Vars
        • R(e);SBLOCK,XR(F)::S(H)
        • S(a);N_GUARD,XP(C)::QAB1(B)
        • S(g);SBLOCK,XR(F)::S(H)
        • S(a);N_GUARD::QAB1(B),XS(a)
        • R(e);N_GUARD::R1(F)
      • Refutation
        • K(d);S_FLIGHT,XR(F)
    • Try
      • S(E);
      • Threat
        • R1(F)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(F)::B(I)
        • R(e);SBLOCK,XR(F)::QAR1(B)
        • S(a);N_GUARD,XP(C)::QAB1(B)
        • S(g);SBLOCK,XR(F)::QAB(B)
        • R(e);N_GUARD::R1(F)
        • S(a);N_GUARD::QAB1(B),XS(a)
      • Refutation
        • R(b);
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • R(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(d);P-FLIGHT,XQ(B)
  • Actual
    • S(E);
    • Threat
      • R1(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(F)::B(I)
      • R(e);SBLOCK,XR(F)::R1(D)
      • S(a);N_GUARD,XP(C)::QAB1(B)
      • S(g);SBLOCK,XR(F)::R(D)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • R(e);N_GUARD::R1(F)
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