MESON Chess Problem Database

Problem Display
PID: 256868 (5bnq/1p6/1pP1Q1pp/4P2b/1RNPk3/3N1R2/r5n1/1r1B2BK w - - 0 1)

Andersson, Sven Tore

Springaren, 1954

5bnq/1p6/1pP1Q1pp/4P2b/1RNPk3/3N1R2/r5n1/1r1B2BK

#2

11 + 12

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Qf6
      • 2.exf6#
    • 1...Ra1
      • 2.Sd2#
    • 1...Rd2
      • 2.Sxd2#
    • 1...Ra3
      • 2.Sd2#
    • 1...Ra4
      • 2.Sd2#
    • 1...Ra5
      • 2.Sd2#
    • 1...Ra6
      • 2.Sd2#
    • 1...Ra7
      • 2.Sd2#
    • 1...Ra8
      • 2.Sd2#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Bg7
      • 2.Sd6#
    • 1...Sf6
      • 2.exf6#
    • 1...Se7
      • 2.Sd6#
    • 1...bxc6
      • 2.Qxc6#
  • Tries
    • 1.Qxg6+?
      • 1...Kd5
        • 2.Sxb6#
      • 1...Bxg6!
  • Keys
    • 1.Sxb6!
      • threat
        • 2.Qd5#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Bxf3
        • 2.Qxg6#
      • 1...bxc6
        • 2.Qxc6#
      • 1...Se3
        • 2.Rxe3#
      • 1...Ra5
        • 2.Sf2#
      • 1...Sf4
        • 2.Re3#
      • 1...Sf6
        • 2.exf6#
      • 1...Se7
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(l);OGATE,P_SPINQ(l),XP(I)::QAR1(K),XQ(l)
    • Q(l);OGATE::QAR(K)+P(I),XQ(l)
    • R(b);N_GUARD::S(G)
    • R(b);N_GUARD::S(G),XR(b)
    • B(j);N_GUARD::S(G),XB(j)
    • B(j);N_GUARD::S(G)
    • S(k);OGATE::QAR(K)+P(I),XS(k)
    • S(k);S_CUTB(j)::S(G)
    • P(i);OGATE,XP(J)::QAB(K),XP(i)
  • Tries
    • Try
      • Q(K);CHECK,XP(g)
      • Vars
        • K(d);S_CUTB(e),S_FLIGHT::S(G),XP(f)
      • Refutation
        • B(e);XQ(K)
  • Actual
    • S(G);XP(f)
    • Threat
      • QAB1(K)
    • Vars
      • Q(l);OGATE,P_SPINQ(l),XP(I)::QAR1(K),XQ(l)
      • B(e);N_GUARD,XR(E)::QAB(K),XP(g)
      • P(i);OGATE,XP(J)::QAB(K),XP(i)
      • S(c);N_GUARD::R1(E),XS(c)
      • R(b);N_GUARD::S(D)
      • S(c);N_GUARD::R1(E)
      • S(k);OGATE::QAR(K)+P(I),XS(k)
      • S(k);S_CUTB(j)::S(D)
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