MESON Chess Problem Database

Problem Display
PID: 240703 (8/8/8/8/2p5/N4p2/pb1QpP2/k1N1K3 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1989

8/8/8/8/2p5/N4p2/pb1QpP2/k1N1K3

#2

5 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc1
      • 2.Qxc1#
    • 1...Bxa3
      • 2.Qxa2#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bd4
      • 2.Qxa2#
    • 1...Be5
      • 2.Qxa2#
    • 1...Bf6
      • 2.Qxa2#
    • 1...Bg7
      • 2.Qxa2#
    • 1...Bh8
      • 2.Qxa2#
    • 1...c3
      • 2.Sb3#
  • Tries
    • 1.Sxc4?
      • threat
        • 2.Qxb2#
      • 1...Kb1
        • 2.Qxb2#
      • 1...Bxc1
        • 2.Qxc1#
      • 1...Ba3
        • 2.Qxa2#
      • 1...Bd4
        • 2.Qxa2#
      • 1...Be5
        • 2.Qxa2#
      • 1...Bf6
        • 2.Qxa2#
      • 1...Bg7
        • 2.Qxa2#
      • 1...Bh8
        • 2.Qxa2#
      • 1...Bc3!
    • 1.Qb4?
      • 1...Bc3+
        • 2.Qxc3#
      • 1...Bxc1
        • 2.Sc2#
      • 1...Bd4
        • 2.Sc2#
      • 1...Be5
        • 2.Sc2#
      • 1...Bf6
        • 2.Sc2#
      • 1...Bg7
        • 2.Sc2#
      • 1...Bh8
        • 2.Sc2#
      • 1...c3
        • 2.Sb3#
      • 1...Bxa3!
    • 1.Qd4?
      • 1...Bc3+
        • 2.Qxc3#
      • 1...c3
        • 2.Sb3#
      • 1...Bxd4!
  • Keys
    • 1.Qc2!
      • 1...Bc3+
        • 2.Qxc3#
      • 1...Bxc1
        • 2.Qxc1#
      • 1...Bxa3
        • 2.Qxa2#
      • 1...Bd4
        • 2.Qxa2#
      • 1...Be5
        • 2.Qxa2#
      • 1...Bf6
        • 2.Qxa2#
      • 1...Bg7
        • 2.Qxa2#
      • 1...Bh8
        • 2.Qxa2#
      • 1...c3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE,XS(A)::QAR2(C),XB(c)
    • B(c);OGATE,XS(E)::QAR1(C),XP(b)
    • B(c);OGATEB,P_PINQ(C)::QAB(C),XB(c)
    • B(c);OGATE::QAR1(C),XP(b)
    • P(f);N_GUARD::S(A)
  • Tries
    • Try
      • S(E);XP(f)
      • Threat
        • QAB1(C),XB(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(C),XB(c)
        • B(c);OGATE,XS(A)::QAR2(C),XB(c)
        • B(c);OGATE::QAR1(C),XP(b)
      • Refutation
        • B(c);P_PINQ(C)
    • Try
      • Q(C);
      • Vars
        • B(c);CHECK,OGATEB::QAB(C),XB(c)
        • B(c);XS(A)::S(E)
        • B(c);::S(E)
        • P(f);N_GUARD::S(A)
      • Refutation
        • B(c);XS(E)
    • Try
      • Q(C);P_PINB(c)
      • Vars
        • B(c);CHECK,OGATEB::QAB(C),XB(c)
        • P(f);N_GUARD,N_SPINB(c)::S(A)
      • Refutation
        • B(c);N_SPINB(c),XQ(C)
  • Actual
    • Q(C);
    • Vars
      • B(c);CHECK,OGATEB::QAB(C),XB(c)
      • B(c);OGATE,XS(A)::QAR2(C),XB(c)
      • B(c);OGATE,XS(E)::QAR1(C),XP(b)
      • B(c);OGATE::QAR1(C),XP(b)
      • P(f);N_GUARD::S(A)
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