MESON Chess Problem Database

Problem Display
PID: 77136 (B7/1QRp4/8/4kP2/4N1K1/3rp3/2n4b/3R4 w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 2007

B7/1QRp4/8/4kP2/4N1K1/3rp3/2n4b/3R4

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
      • 2.Qb2#
    • 1...Ra3
      • 2.Qd5#
    • 1...Rb3
      • 2.Qd5#
    • 1...Rc3
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Sd4
      • 2.Qd5#
  • Tries
    • 1.Rxd3?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Re7#
        • 2.Qxd5#
      • 1...Sb4!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qb2#
      • 1...Rd5
        • 2.Qxd5#
      • 1...d5!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Rxd3#
        • 2.Rc4#
        • 2.Qb2#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...d5!
    • 1.Qb6?
      • threat
        • 2.Qf6#
      • 1...d5
        • 2.Re7#
      • 1...Rd6
        • 2.Qxd6#
      • 1...d6
        • 2.Re7#
      • 1...Rd5!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qh8#
      • 1...Kd4
        • 2.Qb2#
      • 1...d5
        • 2.Rc4#
      • 1...Rd5
        • 2.Qe8#
      • 1...Rd6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::QAR1(E)
    • R(c);N_GUARD::QAR1(E),XR(c)
    • S(a);S_CUTR(c)::QAR1(E)
  • Tries
    • Try
      • R(A);XR(c)
      • Threat
        • QAR1(E)
      • Refutation
        • S(a);
    • Try
      • R(F);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(E),XR(c)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(E);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(E),XR(c)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • P(f);OGATE::R(F)
        • R(c);N_GUARD::QAB1(E),XR(c)
      • Refutation
        • R(c);
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • K(e);P_SPINR(c),S_FLIGHT::QAB(E)
      • P(f);N_GUARD,S_CUTR(c)::QAB(E)+R(F)
      • R(c);::QAR(E)
      • R(c);::R(F)
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