MESON Chess Problem Database

Problem Display
PID: 242345 (4N2B/3ppp2/1r5p/2b2kpK/1nQ2NR1/4p3/2n5/8 w - - 0 1)

Morra, Juan Carlos

Problemas, 1958

4N2B/3ppp2/1r5p/2b2kpK/1nQ2NR1/4p3/2n5/8

#2

6 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qd3#
      • 2.Qxc2#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sd5
      • 2.Qd3#
      • 2.Qxc2#
    • 1...Sa6
      • 2.Qd3#
      • 2.Qxc2#
    • 1...Sc6
      • 2.Qd3#
      • 2.Qxc2#
    • 1...gxf4
      • 2.Rxf4#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sg3#
        • 2.Qe4#
      • 1...Rf6
        • 2.Qe4#
      • 1...Sd5
        • 2.Qe4#
      • 1...f6
        • 2.Qe4#
      • 1...Re6
        • 2.Sg3#
      • 1...Bd4
        • 2.Sg3#
      • 1...Bd6
        • 2.Qxf7#
        • 2.Qe4#
      • 1...Sd4
        • 2.Sg3#
      • 1...e5
        • 2.Sg3#
      • 1...d5!
    • 1.Qd5+?
      • 1...e5
        • 2.Qxe5#
      • 1...Sxd5!
    • 1.Qxc2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxc2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qe4#
      • 1...Ke6
        • 2.Qe4#
      • 1...Bd4
        • 2.Sxe7#
      • 1...Re6
        • 2.Qf1#
      • 1...Sd4
        • 2.Sxe3#
      • 1...e5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD::QAB(A),XS(c)
    • P(f);OGATE,XS(B)::R1(C),XP(f)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);::QAB1(A)
        • S(c);::QAB1(A)
        • P(k);::QAB1(A)
        • R(g);::S(B)
        • B(d);::S(B)
        • S(a);::S(B)
        • P(j);::S(B)
      • Refutation
        • P(i);
    • Try
      • Q(A);CHECK
      • Vars
        • P(j);P_SPINP(j)::QAR1(A),XP(j)
      • Refutation
        • S(c);XQ(A)
    • Try
      • Q(A);CHECK,XS(a)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(A),XS(c)
      • Refutation
        • S(c);XQ(A)
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(e);S_FLIGHT::QAR2(A)
      • B(d);N_GUARD::S(B),XP(j)
      • R(g);SBLOCK::QAR(A)
      • S(a);N_GUARD,S_CUTB(d)::S(B),XP(b)
      • P(j);SBLOCK::S(E)
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