MESON Chess Problem Database

Problem Display
PID: 95672 (8/NnK5/2pp2R1/p1k1p3/1p2PP2/2rPP3/8/1RNQ4 w - - 0 1)

Manganelli, Renato

L'Italia Scacchistica, 1983

8/NnK5/2pp2R1/p1k1p3/1p2PP2/2rPP3/8/1RNQ4

#2

10 + 8

14744 Nuova Antologia dei Problemisti Italiani 1992
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc1
      • 2.Rxc1#
      • 2.Qxc1#
    • 1...Rc2
      • 2.Sb3#
      • 2.Qxc2#
    • 1...Rb3
      • 2.Sxb3#
    • 1...Rc4
      • 2.Sb3#
    • 1...d5
      • 2.Rxc6#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Sb3#
      • 1...b3
        • 2.Qxc3#
      • 1...a4!
    • 1.Qb3?
      • 1...Rxc1
        • 2.Rxc1#
      • 1...Rxb3
        • 2.Sxb3#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...exf4
        • 2.d4#
      • 1...Rc2
        • 2.Qxc2#
      • 1...Rc4
        • 2.Qxc4#
      • 1...a4
        • 2.Qxb4#
      • 1...d5
        • 2.Rxc6#
      • 1...Sd8!
    • 1.d4+?
      • 1...exd4
        • 2.Qxd4#
      • 1...Kc4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qxc6#
      • 1...Sd8
        • 2.Qxa5#
      • 1...b3
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::S(B),XR(a)
    • R(a);N_GUARD::S(B)
    • P(g);OGATE::R1(H),XP(f)
  • Tries
    • Try
      • Q(C);P_PINR(a)
      • Threat
        • S(B)
      • Vars
        • P(b);N_GUARD::QAR2(C),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • R(a);OGATE,XS(B)::R(A),XR(a)
        • R(a);XQ(C)::S(B),XR(a)
        • R(a);XP(D)::S(B),XR(a)
        • P(e);N_GUARD,XP(G)::P(D)
        • R(a);OGATEB::QAR(C),XR(a)
        • R(a);N_GUARD::QAR1(C),XR(a)
        • P(c);N_GUARD::QAB1(C),XP(b)
        • P(g);OGATE::R1(H),XP(f)
      • Refutation
        • S(h);
    • Try
      • P(D);CHECK
      • Vars
        • P(e);OGATE,XP(D)::QAB1(C),XP(e)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(f)
    • Vars
      • S(h);N_GUARD::QAR2(C),XP(c)
      • P(b);OGATEB::QAB(C)
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