MESON Chess Problem Database

Problem Display
PID: 23948 (Kb6/1Qr5/3N4/n2pR3/3N4/1b1kP3/8/4B3 w - - 0 1)

Kapros, Jorge Marcelo

1st Prize, Problem Observer, 1997

Kb6/1Qr5/3N4/n2pR3/3N4/1b1kP3/8/4B3

#2

7 + 6

5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qh7#
    • 1...Rc2
      • 2.Qh7#
    • 1...Rc3
      • 2.Qh7#
    • 1...Rc4
      • 2.Qh7#
    • 1...Rc5
      • 2.Qh7#
    • 1...Rc6
      • 2.Qh7#
    • 1...Rh7
      • 2.Qxh7#
    • 1...Rc8
      • 2.Qh7#
    • 1...Bc4
      • 2.Qb1#
    • 1...Sc4
      • 2.Qxb3#
    • 1...Sc6
      • 2.Qxb3#
  • Tries
    • 1.Qxb3+?
      • 1...Rc3
        • 2.Qd1#
        • 2.Qxc3#
      • 1...Sxb3!
    • 1.Qb5+?
      • 1...Bc4
        • 2.Qb1#
      • 1...Sc4
        • 2.Qxb3#
      • 1...Rc4!
    • 1.Qxc7?
      • threat
        • 2.Qc3#
        • 2.Qh7#
      • 1...Bc4
        • 2.Qh7#
      • 1...Sc4
        • 2.Qh7#
      • 1...Sc6
        • 2.Qh7#
      • 1...Bxc7!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb2#
      • 1...Kxc4
        • 2.Qb5#
      • 1...Rxc4
        • 2.Qh7#
      • 1...Bxc4
        • 2.Qb1#
      • 1...Sxc4
        • 2.Qxb3#
      • 1...dxc4
        • 2.Qe4#

Anticipated by 101764(1990)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(e);OGATE::QAB(F)
    • R(e);OGATE::QAB(F),XR(e)
    • B(a);OGATE::QAB(F)
    • S(c);N_GUARD,S_CUTR(e)::QAR2(F),XB(a)
  • Tries
    • Try
      • Q(F);CHECK,XB(a)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • B(a);OGATE,P_SPINB(a)::QAB(F)
        • S(c);N_GUARD,P_SPINS(c),S_CUTR(e)::QAR2(F),XB(a)
      • Refutation
        • R(e);P_SPINR(e)
    • Try
      • Q(F);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB(F)
        • S(c);::QAB(F)
      • Refutation
        • B(f);XQ(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • R(e);OGATE,SBLOCK,XS(E)::QAB(F)
      • B(a);OGATE,SBLOCK,XS(E)::QAB(F)
      • S(c);N_GUARD,XS(E)::QAR2(F),XB(a)
      • P(d);OGATE,SBLOCK,XS(E)::QAB1(F)
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