MESON Chess Problem Database

Problem Display
PID: 160876 (2BbN1K1/r2n2R1/1q1PRp2/rQ1N1k1p/4p2p/8/3B4/8 w - - 0 1)

Albrecht, Hermann

Hamburger Problem-Nachrichten, 1947

2BbN1K1/r2n2R1/1q1PRp2/rQ1N1k1p/4p2p/8/3B4/8

#2

9 + 10

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Sf4#
    • 1...Sc5
      • 2.Qf1#
    • 1...Se5
      • 2.Rxf6#
    • 1...Sb8
      • 2.Se7#
    • 1...Sf8
      • 2.Se7#
  • Tries
    • 1.Se3+?
      • 1...Kf4
        • 2.Qf1#
      • 1...Kxe6!
    • 1.Rg1?
      • threat
        • 2.Sg7#
      • 1...Kxe6
        • 2.Sf4#
      • 1...Sc5
        • 2.Qf1#
      • 1...Se5
        • 2.Rxf6#
      • 1...Sb8
        • 2.Se7#
      • 1...Sf8
        • 2.Se7#
      • 1...Qxg1+!
    • 1.Rg3?
      • threat
        • 2.Sg7#
      • 1...Kxe6
        • 2.Sf4#
      • 1...Sc5
        • 2.Qf1#
      • 1...Se5
        • 2.Rxf6#
      • 1...Sb8
        • 2.Se7#
      • 1...Sf8
        • 2.Se7#
      • 1...hxg3!
    • 1.Rg5+?
      • 1...Kxe6
        • 2.Sf4#
      • 1...fxg5!
    • 1.Qf1+?
      • 1...Qf2
        • 2.Qh3#
      • 1...Kxe6!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Sg7#
      • 1...Kxe6
        • 2.Sf4#
      • 1...Sc5
        • 2.Qf1#
      • 1...Se5
        • 2.Rxf6#
      • 1...Sb8
        • 2.Se7#
      • 1...Sf8
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINS(i),S_FLIGHT,XR(E)::S(C)
    • S(i);S_CUTQ(f)::QAR(B)
    • S(i);SBLOCK::B(G)+R(E),DCHECK,XP(g)
    • S(i);::QAR(B)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR(B)
      • Refutation
        • K(d);P_SPINS(i),S_FLIGHT,XR(E)
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • K(d);P_SPINS(i),S_FLIGHT,XR(E)::S(C)
        • S(i);S_CUTQ(f)::QAR(B)
        • S(i);SBLOCK::B(G)+R(E),DCHECK,XP(g)
        • S(i);::QAR(B)+S(C),DCHECK
      • Refutation
        • Q(f);CHECK,XR(F)
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • K(d);P_SPINS(i),S_FLIGHT,XR(E)::S(C)
        • S(i);S_CUTQ(f)::QAR(B)
        • S(i);SBLOCK::B(G)+R(E),DCHECK,XP(g)
        • S(i);::QAR(B)+S(C),DCHECK
      • Refutation
        • P(b);XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);P_SPINS(i),S_FLIGHT,XR(E)::S(C)
      • Refutation
        • P(g);XR(F)
    • Try
      • Q(B);CHECK
      • Vars
        • Q(f);P_SPINQ(f)::QAB(B)
      • Refutation
        • K(d);P_SPINS(i),S_FLIGHT,XR(E)
  • Actual
    • R(F);
    • Threat
      • S(H)
    • Vars
      • K(d);P_SPINS(i),S_FLIGHT,XR(E)::S(C)
      • S(i);S_CUTQ(f)::QAR(B)
      • S(i);SBLOCK::B(G)+R(E),DCHECK,XP(g)
      • S(i);::QAR(B)+S(C),DCHECK
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