MESON Chess Problem Database

Problem Display
PID: 45313 (6KR/4pP2/4pP1p/5n1k/4QB1p/5N2/2p5/3B3R w - - 0 1)

Retter, Yosef

2nd Prize, Israel Ring Ty., 1961

6KR/4pP2/4pP1p/5n1k/4QB1p/5N2/2p5/3B3R

#2

9 + 7

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Se5#
    • 1...Kg6
      • 2.Rxh6#
    • 1...Se3
      • 2.Rxh4#
    • 1...Sg3
      • 2.Rxh4#
    • 1...Sd4
      • 2.Rxh4#
    • 1...Sd6
      • 2.Rxh4#
    • 1...Sg7
      • 2.Rxh4#
    • 1...c1B
      • 2.Sxh4#
      • 2.Se5#
    • 1...e5
      • 2.Qxf5#
  • Tries
    • 1.Rxh4+?
      • 1...Kg6
        • 2.R4xh6#
        • 2.R8xh6#
      • 1...Sxh4!
    • 1.Rxh6+?
      • 1...Kg4
        • 2.Se5#
        • 2.Be5#
        • 2.Bd6#
        • 2.Bc7#
        • 2.Bb8#
      • 1...Sxh6+!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qxf5#
      • 1...Kg4
        • 2.Rxh4#
      • 1...Kg6
        • 2.Se5#
      • 1...Se3
        • 2.Rxh6#
      • 1...Sg3
        • 2.Rxh6#
      • 1...Sd4
        • 2.Rxh6#
      • 1...Sd6
        • 2.Rxh6#
      • 1...Sg7
        • 2.Rxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
    • K(d);N_SPINP(b),P_SPINS(c),S_FLIGHT::R1(I),XP(f)
    • S(c);N_GUARD::R1(B),XP(b)
    • P(e);N_GUARD::QAR2(D),XS(c)
  • Tries
    • Try
      • R(B);CHECK,P_PINP(f),XP(b)
      • Refutation
        • S(c);XR(B)
    • Try
      • R(I);CHECK,XP(f)
      • Refutation
        • S(c);CHECK,XR(I)
  • Actual
    • Q(D);XP(e)
    • Threat
      • QAR2(D),XS(c)
    • Vars
      • K(d);N_SPINP(b),P_SPINS(c),S_FLIGHT::R1(B),XP(b)
      • K(d);N_SPINP(b),S_FLIGHT::S(C)
      • S(c);N_GUARD::R1(I),XP(f)
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