MESON Chess Problem Database

Problem Display
PID: 48259 (3RN3/8/4RPp1/1pp1rPBn/4k2K/4p3/2p5/5Q1b w - - 0 1)

Cuppini, Alessandro

Comm., Die Schwalbe, 2003

3RN3/8/4RPp1/1pp1rPBn/4k2K/4p3/2p5/5Q1b

#2

8 + 9

23 Die Schwalbe 2006
3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Qd3#
    • 1...Sg3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sxf6
      • 2.Sxf6#
      • 2.Qf4#
    • 1...Sg7
      • 2.Qf4#
    • 1...gxf5
      • 2.Qxh1#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Qd3#
        • 2.Qxh1#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Sxf6+
        • 2.Sxf6#
      • 1...gxf5+
        • 2.Qxf5#
      • 1...c1Q
        • 2.Qd3#
      • 1...c1S
        • 2.Qxh1#
      • 1...c1R
        • 2.Qd3#
      • 1...Bg2
        • 2.Qxg2#
        • 2.Qd3#
      • 1...Sg3
        • 2.Qd3#
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...e2
        • 2.Qxe2#
        • 2.Qxh1#
      • 1...c4
        • 2.Qxh1#
      • 1...Rxe6!
    • 1.Qg2+?
      • 1...Kxf5
        • 2.Qg4#
      • 1...Bxg2!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rexe5#
      • 1...Kxd5
        • 2.Qd3#
      • 1...Rxe6
        • 2.Qxh1#

Anticipated by 73399(2002)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(a);SBLOCK::QAB1(A)
    • S(h);N_GUARD::QAR1(A)
    • S(h);N_GUARD::QAR1(A),XS(h)
    • P(i);SBLOCK,XP(C)::QAB(A),XB(a)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(A),XB(a)
        • S(h);CHECK,XP(F)::S(H),XS(h)
        • P(i);CHECK,OGATE,XP(C)::QAB1(A),XP(i)
        • P(b);::QAB1(A)
        • P(b);::QAB(A),XB(a)
        • S(h);N_GUARD::QAR1(A),XS(h)
        • P(f);::QAB(A),XB(a)
      • Refutation
        • R(g);N_SPINR(g),XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);N_SPINR(g),S_FLIGHT,XP(C)::QAB1(A)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • R(G);
    • Threat
      • R1(E),XR(g)
    • Vars
      • K(d);N_SPINR(g),S_FLIGHT,XR(G)::QAR2(A)
      • R(g);N_SPINR(g),XR(E)::QAB(A),XB(a)
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