MESON Chess Problem Database

Problem Display
PID: 16995 (nB4N1/1pr5/1b1kb2R/3p3R/Bp1r4/2NP4/2Q5/2K5 w - - 0 1)

Hassberg, Eric Manfred

Chess Correspondent, 1945

nB4N1/1pr5/1b1kb2R/3p3R/Bp1r4/2NP4/2Q5/2K5

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Se4#
    • 1...Rc4
      • 2.Rxd5#
    • 1...Re4
      • 2.Rxd5#
    • 1...Rf4
      • 2.Rxd5#
    • 1...Rg4
      • 2.Rxd5#
    • 1...Rh4
      • 2.Rxd5#
  • Tries
    • 1.Be8?
      • threat
        • 2.Sb5#
      • 1...Kc5
        • 2.Se4#
      • 1...Rc4
        • 2.Rxd5#
      • 1...bxc3!
    • 1.Rxe6+?
      • 1...Kc5
        • 2.Se4#
      • 1...Kxe6!
    • 1.Qh2+?
      • 1...Rf4
        • 2.Rxd5#
      • 1...Kc5!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf8#
      • 1...Kc5
        • 2.Se4#
      • 1...Rf4
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • K(e);N_SPINB(f),N_SPINR(h),P_SPINP(c),S_FLIGHT::QAR(B)+S(C),DCHECK
    • R(b);N_GUARD::R1(F),XP(c)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(C)
      • Vars
        • K(e);N_SPINB(f),N_SPINR(h),P_SPINP(c),S_FLIGHT::QAR(B)+S(C),DCHECK
        • R(b);N_GUARD::R1(F),XP(c)
      • Refutation
        • P(a);XS(C)
    • Try
      • R(G);CHECK,XB(f)
      • Vars
        • K(e);N_SPINR(h),P_SPINP(c),S_FLIGHT::QAR(B)+S(C),DCHECK
      • Refutation
        • K(e);N_SPINR(h),P-FLIGHT,XR(G)
    • Try
      • Q(B);CHECK,P_SPINS(C)
      • Vars
        • R(b);N_SPINR(h),P_SPINR(b)::R1(F),XP(c)
      • Refutation
        • K(e);N_PINS(C),N_SPINB(f),N_SPINR(h),P_SPINP(c),S_FLIGHT
  • Actual
    • Q(B);P_SPINS(C)
    • Threat
      • QAB(B)
    • Vars
      • K(e);N_PINS(C),N_SPINB(f),N_SPINR(h),P_SPINP(c),P_SPINR(b),S_FLIGHT::S(C)
      • R(b);N_GUARD::R1(F),XP(c)
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