MESON Chess Problem Database

Problem Display
PID: 149115 (brN5/Nkp3qR/p2Pp1p1/p1B3p1/4R3/8/2p3K1/7B w - - 0 1)

Wissmann, Dolf

Probleemblad, 1982

brN5/Nkp3qR/p2Pp1p1/p1B3p1/4R3/8/2p3K1/7B

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Rxc7#
    • 1...Qb2
      • 2.Rxc7#
    • 1...Qc3
      • 2.Rxc7#
    • 1...Qd4
      • 2.Rxc7#
    • 1...Qe5
      • 2.Rxc7#
    • 1...Qf6
      • 2.Rxc7#
    • 1...Qh6
      • 2.Rxc7#
    • 1...Qf8
      • 2.Rxc7#
    • 1...Qh8
      • 2.Rxc7#
    • 1...Qg8
      • 2.Rxc7#
    • 1...a4
      • 2.Rb4#
    • 1...cxd6
      • 2.Rxg7#
    • 1...c6
      • 2.Rxg7#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Rb4#
      • 1...Qd4+
        • 2.Rxd4#
      • 1...Qf6+
        • 2.Rf4#
      • 1...Qf8+
        • 2.Rf4#
      • 1...cxd6
        • 2.Rxg7#
      • 1...c6
        • 2.Rxg7#
      • 1...Qf7+!
    • 1.Kh2?
      • threat
        • 2.Rb4#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qh6+
        • 2.Rh4#
      • 1...cxd6
        • 2.Rxg7#
      • 1...Qd4
        • 2.Rxd4#
        • 2.Rxc7#
      • 1...c6
        • 2.Rxg7#
      • 1...Qxh7+!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Rb4#
      • 1...Qc3+
        • 2.Re3#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...cxd6
        • 2.Rxg7#
      • 1...Qd4
        • 2.Rxd4#
        • 2.Rxc7#
      • 1...c6
        • 2.Rxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(i);OGATE,P_SPINP(h)::R1(G),XP(h)
    • P(b);N_GUARD::R(C)
    • P(h);OGATEB,P_SPINQ(i),XP(E)::R(G),XQ(i)
    • P(h);OGATEB,P_SPINQ(i)::R(G),XQ(i)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • B(A)+R(C),DCHECK
      • Vars
        • Q(i);CHECK,P_SPINP(h)::B(A)+R(C),XQ(i)
        • Q(i);CHECK,P_SPINP(h)::B(A)+R(C)
        • P(h);OGATEB,P_SPINQ(i),XP(E)::R(G),XQ(i)
        • P(h);OGATEB,P_SPINQ(i)::R(G),XQ(i)
      • Refutation
        • Q(i);CHECK
    • Try
      • K(B);P-FLIGHT
      • Threat
        • B(A)+R(C),DCHECK
      • Vars
        • Q(i);CHECK,P_SPINP(h)::B(A)+R(C),XQ(i)
        • Q(i);CHECK,P_SPINP(h)::B(A)+R(C)
        • P(h);OGATEB,P_SPINQ(i),XP(E)::R(G),XQ(i)
        • P(h);OGATEB,P_SPINQ(i)::R(G),XQ(i)
      • Refutation
        • Q(i);CHECK,XR(G)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • Q(i);CHECK,P_SPINP(h)::B(A)+R(C)
      • Q(i);CHECK,P_SPINP(h)::B(A)+R(C),XQ(i)
      • P(h);OGATEB,P_SPINQ(i),XP(E)::R(G),XQ(i)
      • P(h);OGATEB,P_SPINQ(i)::R(G),XQ(i)
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