MESON Chess Problem Database

Problem Display
PID: 253062 (4q3/3n4/1p1RP3/2PNk2r/b7/Kp3Qb1/P2R1P2/4r2B w - - 0 1)

Parrinello, Mario

Probleemblad, 1983

4q3/3n4/1p1RP3/2PNk2r/b7/Kp3Qb1/P2R1P2/4r2B

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa8
      • 2.Qxh5#
    • 1...Qb8
      • 2.Qxh5#
    • 1...Qc8
      • 2.Qxh5#
    • 1...Ra1
      • 2.Qe4#
    • 1...Rb1
      • 2.Qe4#
    • 1...Rc1
      • 2.Qe4#
    • 1...Rd1
      • 2.Qe4#
    • 1...Rf1
      • 2.Qe4#
    • 1...Rg1
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rf5
      • 2.Qc3#
    • 1...Bxf2
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bh4
      • 2.Qf4#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sb8
      • 2.Qf6#
    • 1...Sf8
      • 2.Qf6#
  • Tries
    • 1.Re2+?
      • 1...Kd4
        • 2.Qc3#
      • 1...Rxe2!
  • Keys
    • 1.Se7!
      • threat
        • 2.R2d5#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Bf4
        • 2.Qc3#
      • 1...Qa8
        • 2.Sg6#
      • 1...Rd1
        • 2.Re2#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Sf6
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • Q(i);N_GUARD::QAR(F),XR(f)
    • R(a);N_GUARD,P_PINP(B)::QAR1(F)
    • R(a);N_GUARD::QAR1(F)
    • R(a);N_GUARD::QAR1(F),XR(a)
    • R(f);SBLOCK::QAB(F)
    • B(c);N_GUARD,XP(D)::QAB1(F)
    • B(c);N_GUARD::QAB1(F),XB(c)
    • B(c);N_GUARD::QAB1(F)
    • S(h);N_GUARD::QAB1(F),XS(h)
    • S(h);N_GUARD::QAB1(F)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAB1(F)
      • Refutation
        • R(a);XR(C)
  • Actual
    • S(H);
    • Threat
      • R1(C)
    • Vars
      • R(f);N_GUARD::QAR1(F),XR(f)
      • B(c);SBLOCK::QAB(F)
      • Q(i);N_GUARD::S(H)
      • R(a);N_GUARD::R(C)
      • B(d);N_GUARD::S(H),XB(d)
      • S(h);SBLOCK::QAB(F),XB(c)
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Developed and maintained by Brian Stephenson.
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