MESON Chess Problem Database

Problem Display
PID: 17769 (2N5/5B2/KP1rq3/4Qb2/1pk1p2R/1nnr4/N1PP4/6B1 w - - 0 1)

Ebend, Tibor

1st Prize, Parallele 50, 1949

2N5/5B2/KP1rq3/4Qb2/1pk1p2R/1nnr4/N1PP4/6B1

#2

10 + 9

5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996
133 The Problemist Supplement 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Sxd6#
    • 1...Re3
      • 2.Sxd6#
    • 1...Rf3
      • 2.Sxd6#
    • 1...Rg3
      • 2.Sxd6#
    • 1...Rh3
      • 2.Sxd6#
    • 1...Rxb6+
      • 2.Sxb6#
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc1
      • 2.Qc5#
    • 1...Sxd2
      • 2.Qc5#
    • 1...Sd4
      • 2.Sxd6#
    • 1...Sa5
      • 2.Qc5#
    • 1...Sc5+
      • 2.Qxc5#
    • 1...Sb1
      • 2.Qb5#
    • 1...Sd1
      • 2.Qb5#
    • 1...Sxa2
      • 2.Qb5#
    • 1...Se2
      • 2.Qb5#
    • 1...Sa4
      • 2.Qb5#
    • 1...Sb5
      • 2.Qxb5#
  • Tries
    • 1.Rxe4+?
      • 1...R3d4
        • 2.Sxd6#
        • 2.d3#
      • 1...R6d4
        • 2.Sd6#
      • 1...Sd4
        • 2.Sxd6#
      • 1...Sxe4
        • 2.Qb5#
      • 1...Bxe4!
  • Keys
    • 1.Sc1!
      • threat
        • 2.cxb3#
      • 1...Rxb6+
        • 2.Sxb6#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Sxc1
        • 2.Qc5#
      • 1...Sxd2
        • 2.Qc5#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sd4
        • 2.Sxd6#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sb1
        • 2.Qb5#
      • 1...Sd1
        • 2.Qb5#
      • 1...Sa2
        • 2.Qb5#
      • 1...Se2
        • 2.Qb5#
      • 1...Sa4
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sd5
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(i);S_CUTR(c)::S(J),XR(h)
    • R(c);N_GUARD::S(J),XR(h)
    • R(h);CHECK,XP(H)::S(J),XR(h)
    • S(a);N_GUARD::QAR1(F)
    • S(a);N_GUARD,XP(D)::QAR1(F)
    • S(a);N_SPINP(f),S_CUTR(c)::S(J),XR(h)
    • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
    • S(b);N_GUARD::QAB1(F)
    • S(b);N_GUARD,XS(B)::QAB1(F)
    • S(b);N_GUARD::QAB1(F),XS(b)
  • Tries
    • Try
      • R(E);CHECK,XP(f)
      • Vars
        • R(h);P_SPINR(h)::S(J)
        • S(a);P_SPINS(a)::S(J),XR(h)
        • S(b);XR(E)::QAB1(F)
      • Refutation
        • B(g);XR(E)
  • Actual
    • S(B);
    • Threat
      • P(C),XS(a)
    • Vars
      • R(h);CHECK,XP(H)::S(J),XR(h)
      • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
      • S(a);N_GUARD,XS(B)::QAR1(F)
      • S(a);N_GUARD,XP(D)::QAR1(F)
      • S(a);N_GUARD::QAR1(F)
      • S(a);N_SPINP(f),S_CUTR(c)::S(J),XR(h)
      • S(b);N_GUARD::QAB1(F)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • S(b);N_SPINQ(i),S_CUTR(h)::P(C),XR(c)
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