MESON Chess Problem Database

Problem Display
PID: 240184 (3R2B1/qbB1NN2/5R1p/5p2/2pnkP2/4b3/2PQ1PK1/4r1n1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Tijdschrift vd KNSB, 1940

3R2B1/qbB1NN2/5R1p/5p2/2pnkP2/4b3/2PQ1PK1/4r1n1

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxe3#
    • 1...Rb1
      • 2.Qxe3#
    • 1...Rc1
      • 2.Qxe3#
    • 1...Rd1
      • 2.Qxe3#
    • 1...Rf1
      • 2.Qxe3#
    • 1...Bxf2
      • 2.Sd6#
    • 1...Bxf4
      • 2.Qxf4#
    • 1...Sge2
      • 2.Qxe3#
    • 1...Sxc2
      • 2.Re6#
      • 2.Qxc2#
    • 1...Sde2
      • 2.Re6#
    • 1...Sb3
      • 2.Re6#
    • 1...Sb5
      • 2.Re6#
    • 1...Sc6
      • 2.Qd5#
    • 1...Se6
      • 2.Rxe6#
    • 1...c3
      • 2.Qd3#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Rxd4+?
      • 1...Bxd4
        • 2.Sd6#
      • 1...Qxd4!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sg3#
      • 1...Bxf2
        • 2.S7d6#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Sxf5
        • 2.Re6#
      • 1...Sge2
        • 2.Qxe3#
      • 1...Sde2
        • 2.S5d6#
        • 2.Re8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • R(a);N_GUARD::QAR1(B),XB(c)
    • B(c);XP(C)::S(I)
    • B(c);OGATE,XP(E)::QAR1(B),XB(c)
    • S(b);S_CUTR(a)::QAR1(B),XB(c)
    • S(e);N_GUARD::R(F)
    • S(e);OGATE::QAB1(B)
    • S(e);N_GUARD::R(F),XS(e)
    • P(d);N_GUARD::QAB1(B)
    • P(h);N_GUARD::S(I)
  • Tries
    • Try
      • R(J);CHECK,XS(e)
      • Vars
        • B(c);XR(J)::S(I)
      • Refutation
        • Q(i);XR(J)
  • Actual
    • S(H);XP(g)
    • Threat
      • S(H)
    • Vars
      • B(c);XP(C)::S(I)
      • B(c);OGATE,XP(E)::QAR1(B),XB(c)
      • S(e);N_GUARD,SBLOCK,XS(H)::R(F)
      • S(b);S_CUTR(a)::QAR1(B),XB(c)
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