MESON Chess Problem Database

Problem Display
PID: 178785 (2RQ2K1/8/1P1P1P2/R2n1p2/r1Nk4/6B1/2BP2Nb/5r2 w - - 0 1)

Hermanson, Halvar

Springaren, 1949

2RQ2K1/8/1P1P1P2/R2n1p2/r1Nk4/6B1/2BP2Nb/5r2

#2

12 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Be5#
    • 1...Sxb6
      • 2.Qxb6#
    • 1...Sxf6+
      • 2.Qxf6#
    • 1...Se7+
      • 2.dxe7#
  • Tries
    • 1.Bf2+?
      • 1...Se3
        • 2.Bxe3#
      • 1...Rxf2!
  • Keys
    • 1.Sce3!
      • threat
        • 2.Rxd5#
      • 1...Sxf6+
        • 2.Qxf6#
      • 1...Se7+
        • 2.dxe7#
      • 1...Rxa5
        • 2.Rc4#
      • 1...Sxe3
        • 2.dxe3#
      • 1...Sxb6
        • 2.Qxb6#
      • 1...Sc3
        • 2.dxc3#
      • 1...Sb4
        • 2.Rc4#
      • 1...Sf4
        • 2.Sxf5#
      • 1...Sc7
        • 2.dxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(b);N_GUARD::B(D)
    • S(e);OGATE,XP(G)::QAB(K),XS(e)
    • S(e);CHECK,OGATE,XP(I)::QAB(K),XS(e)
    • S(e);CHECK,OGATE::QAR(K)+P(H),XS(e)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::B(D),XS(e)
      • Refutation
        • R(a);XB(D)
  • Actual
    • S(E);
    • Threat
      • R1(F),XS(e)
    • Vars
      • S(e);CHECK,OGATE,XP(I)::QAB(K),XS(e)
      • S(e);CHECK,OGATE::QAR(K)+P(H),XS(e)
      • R(c);N_GUARD,XR(F)::R1(J)
      • S(e);OGATE,XS(E)::P(B),XS(e)
      • S(e);OGATE,XP(G)::QAB(K),XS(e)
      • S(e);OGATE::P(B),XS(e)
      • S(e);S_CUTR(c)::R1(J)
      • S(e);S_CUTR(a)::S(E),XP(f)
      • S(e);OGATE::QAR(K)+P(H),XS(e)
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