MESON Chess Problem Database

Problem Display
PID: 261468 (8/4RK2/1p1k4/8/n7/PNrp1B2/1Q3b2/8 w - - 0 1)

Mirri, Giorgio

Neue Zurcher Zeitung, 2005

8/4RK2/1p1k4/8/n7/PNrp1B2/1Q3b2/8

#2

6 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qe5#
      • 2.Qf6#
    • 1...Rc2
      • 2.Qe5#
      • 2.Qf6#
    • 1...Rxb3
      • 2.Qe5#
    • 1...Rc4
      • 2.Qe5#
      • 2.Qf6#
    • 1...Rc5
      • 2.Qf6#
    • 1...Rc6
      • 2.Qe5#
      • 2.Qf6#
    • 1...Rc7
      • 2.Qe5#
      • 2.Qf6#
    • 1...Rc8
      • 2.Qe5#
      • 2.Qf6#
    • 1...Bc5
      • 2.Qh2#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Sb7#
      • 1...Kc5
        • 2.Qb4#
      • 1...Rc7
        • 2.Qe5#
      • 1...Sc5
        • 2.Qxb6#
      • 1...bxa5!
    • 1.Qxc3?
      • threat
        • 2.Qe5#
        • 2.Qf6#
        • 2.Qc6#
        • 2.Qc7#
      • 1...Bg3
        • 2.Qd4#
        • 2.Qf6#
        • 2.Qxd3#
        • 2.Qc6#
        • 2.Qc7#
      • 1...Bd4
        • 2.Qxd4#
        • 2.Qc6#
        • 2.Qc7#
      • 1...Bh4
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qxd3#
        • 2.Qc6#
        • 2.Qc7#
      • 1...Bc5
        • 2.Qe5#
        • 2.Qf6#
      • 1...Sc5
        • 2.Qe5#
      • 1...Sxc3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sb7#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Rxc5
        • 2.Qf6#
      • 1...Bxc5
        • 2.Qh2#
      • 1...Sxc5
        • 2.Qxb6#
      • 1...bxc5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,XS(C)::QAB1(A)
    • R(b);OGATE::QAR2(A)
    • B(a);OGATE::QAB(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(f);S_CUTB(a),S_CUTR(b),S_CUTS(d),S_FLIGHT::QAB1(A)
        • R(b);OGATE,P_PINR(E)::QAB1(A)
        • S(d);N_GUARD,S_CUTB(a),S_CUTR(b)::QAR2(A),XP(e)
      • Refutation
        • P(e);XS(C)
    • Try
      • Q(A);XR(b)
      • Threat
        • DUALS(4)
      • Vars
        • S(d);::QAB1(A)
      • Refutation
        • S(d);XQ(A)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(C)::QAB1(A)
      • R(b);OGATE,SBLOCK,XS(C)::QAR2(A)
      • B(a);OGATE,SBLOCK,XS(C)::QAB(A)
      • S(d);N_GUARD,XS(C)::QAR2(A),XP(e)
      • P(e);OGATE,SBLOCK,XS(C)::QAB(A)
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