MESON Chess Problem Database

Problem Display
PID: 52813 (1k6/R2BN3/K1p5/1r1b4/2p5/5p2/R7/1Q6 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2004

1k6/R2BN3/K1p5/1r1b4/2p5/5p2/R7/1Q6

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Rxb2#
      • 2.Qxb2#
    • 1...Rb4
      • 2.Qxb4#
    • 1...Rb6+
      • 2.Qxb6#
    • 1...Rb7
      • 2.Qxb7#
    • 1...Be6
      • 2.Sxc6#
    • 1...Bf7
      • 2.Sxc6#
    • 1...Bg8
      • 2.Sxc6#
  • Tries
    • 1.Rb7+?
      • 1...Rxb7
        • 2.Qxb7#
      • 1...Ka8!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qe5#
        • 2.Qh2#
      • 1...Rb6+
        • 2.Qxb6#
      • 1...Rxb2
        • 2.Rxb2#
      • 1...Rb7
        • 2.Qxb7#
      • 1...Be4
        • 2.Qh8#
      • 1...Be6
        • 2.Sxc6#
      • 1...Bf7
        • 2.Sxc6#
      • 1...Bg8
        • 2.Sxc6#
      • 1...f2
        • 2.Qe5#
      • 1...c3
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATEB::QAR(A),XR(c)
    • R(c);CHECK,OGATE::QAR2(A),XR(c)
    • R(c);OGATE::QAR1(A),XR(c)
    • B(d);N_GUARD::S(F),XP(e)
  • Tries
    • Try
      • R(D);CHECK,N_PINR(c)
      • Vars
        • R(c);OGATE,P_SPINR(c),XR(D)::QAR1(A),XR(c)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(c);CHECK,OGATE::QAR2(A),XR(c)
      • R(c);N_SPINR(c),OGATE,XQ(A)::R(B),XR(c)
      • R(c);OGATE::QAR1(A),XR(c)
      • B(d);N_GUARD::QAR(A)
      • B(d);N_GUARD::S(F),XP(e)
      • P(a);::QAB(A)
      • P(b);::QAB(A)
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