MESON Chess Problem Database

Problem Display
PID: 276152 (8/8/1N3K2/r1pP4/1kP5/2N5/PBPP4/1qQ5 w - - 0 1)

Froberg, Johan Hilding Laurentius

Persson, Lars Holger

Springaren, 1993

8/8/1N3K2/r1pP4/1kP5/2N5/PBPP4/1qQ5

#2

10 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb2
      • 2.Qxb2#
  • Tries
    • 1.Sxb1?
      • threat
        • 2.Bc3#
        • 2.c3#
      • 1...Rxa2
        • 2.Bc3#
      • 1...Ra4
        • 2.Bc3#
      • 1...Rb5
        • 2.Bc3#
      • 1...Ra6
        • 2.Bc3#
      • 1...Ra7
        • 2.Bc3#
      • 1...Ra8
        • 2.Bc3#
      • 1...Ra3!
  • Keys
    • 1.Sca4!
      • threat
        • 2.Ba3#
        • 2.Bc3#
        • 2.a3#
        • 2.c3#
      • 1...Qxb2+
        • 2.Qxb2#
      • 1...Qxa2
        • 2.Bc3#
      • 1...Qxc2
        • 2.Ba3#
      • 1...Qxc1
        • 2.a3#
      • 1...Rxa4
        • 2.Bc3#
      • 1...Rb5
        • 2.Bc3#
      • 1...Ra6
        • 2.Bc3#
      • 1...Ra7
        • 2.Bc3#
      • 1...Ra8
        • 2.Bc3#
      • 1...Qa1
        • 2.c3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • Q(a);OGATE,P_PINS(F),XB(C)::QAR2(A),XQ(a)
  • Tries
    • Try
      • S(F);XQ(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(B)::B(C)
        • R(c);::B(C)
        • R(c);P_PINS(I)::B(C)
      • Refutation
        • R(c);
  • Actual
    • S(F);
    • Threat
      • DUALS(4)
    • Vars
      • Q(a);CHECK,OGATE,XB(C)::QAR2(A),XQ(a)
      • Q(a);XP(B)::B(C)
      • Q(a);XP(D)::B(C)
      • Q(a);XQ(A)::P(B)
      • R(c);XS(F)::B(C)
      • R(c);::B(C)
      • R(c);P_PINS(I)::B(C)
      • Q(a);P_PINB(C)::P(D)
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