MESON Chess Problem Database

Problem Display
PID: 234357 (8/1q2pK2/4Np2/3r4/1Nb2BBp/1nR2P2/4k3/2b3Q1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Skakbladet, 1948

8/1q2pK2/4Np2/3r4/1Nb2BBp/1nR2P2/4k3/2b3Q1

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Re3#
    • 1...Sd2
      • 2.Re3#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qe1#
      • 1...Rd1
        • 2.Qg2#
      • 1...Bd2!
    • 1.Bg3?
      • threat
        • 2.Qe1#
      • 1...Kd2
        • 2.Rc2#
        • 2.Qe1#
      • 1...Rd1
        • 2.Qf2#
        • 2.Qg2#
      • 1...Bd2
        • 2.f4#
      • 1...hxg3!
    • 1.Re3+?
      • 1...Kd2
        • 2.Qe1#
      • 1...Bxe3!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Qe1#
      • 1...Kxd2
        • 2.Rc2#
      • 1...Rxd2
        • 2.Re3#
      • 1...Bxd2
        • 2.f4#
      • 1...Sxd2
        • 2.Sf4#
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(f);P_PINS(G),SBLOCK,S_CUTB(a)::R1(B)
    • S(c);SBLOCK,S_CUTB(a)::R1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • R(f);P_PINS(G),SBLOCK::QAR2(A)
      • Refutation
        • B(a);
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • B(a);SBLOCK::B(F)+P(C)
      • Refutation
        • P(e);XB(E)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • B(a);XR(B)
  • Actual
    • B(E);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XB(E)::R1(B)
      • R(f);P_PINS(G),SBLOCK,XB(E)::R1(B)
      • B(a);SBLOCK,XB(E)::B(F)+P(C)
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Developed and maintained by Brian Stephenson.
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