MESON Chess Problem Database

Problem Display
PID: 201760 (8/2Kp4/b2P1rn1/3R2p1/1N3kB1/3p1P2/4nQ2/8 w - - 0 1)

Holler, Werner

Augsburger Allgemeine Zeitung, 2018

8/2Kp4/b2P1rn1/3R2p1/1N3kB1/3p1P2/4nQ2/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Rxf5#
    • 1...Rxd6
      • 2.Rf5#
    • 1...Re6
      • 2.Rf5#
    • 1...Bb7
      • 2.Sxd3#
    • 1...Bc8
      • 2.Sxd3#
    • 1...Sg3
      • 2.Qd2#
  • Tries
    • 1.Rd4+?
      • 1...Ke5
        • 2.Re4#
        • 2.Qe3#
      • 1...Sxd4!
    • 1.Qh2+?
      • 1...Sg3
        • 2.Qd2#
      • 1...Ke3!
  • Keys
    • 1.Re5!
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Qe3#
      • 1...Sxe5
        • 2.Sd5#
      • 1...Re6
        • 2.Rf5#
      • 1...Bb7
        • 2.Sxd3#
      • 1...Sc3
        • 2.Qh2#
      • 1...Sg3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(f);N_GUARD::R1(E),XR(f)
    • R(f);N_GUARD,XP(F)::R1(E)
    • R(f);N_GUARD::R1(E)
    • B(e);N_GUARD::S(C),XP(b)
    • S(a);OGATE,SBLOCK::QAB(A)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • S(a);XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);OGATE,P_SPINS(a),SBLOCK::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(c);S_FLIGHT,XR(E)::QAR2(A)
      • S(g);SBLOCK,XR(E)::S(C)
      • R(f);N_GUARD::R1(E)
      • B(e);N_GUARD::S(C),XP(b)
      • S(a);N_GUARD::QAB(A)
      • S(a);SBLOCK::QAB1(A)
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