MESON Chess Problem Database

Problem Display
PID: 90715 (1K6/8/4N2p/1p4nr/BR1p1Q2/B1kp1R2/1p2b1r1/6nq w - - 0 1)

Fleck, Ferenc

Die Schwalbe, 1949

1K6/8/4N2p/1p4nr/BR1p1Q2/B1kp1R2/1p2b1r1/6nq

#2

7 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...b1S
      • 2.Qc1#
  • Tries
    • 1.Rxd3+?
      • 1...Kxd3
        • 2.Qxd4#
      • 1...Bxd3!
    • 1.Rb3+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Kc2!
    • 1.Rc4+?
      • 1...Kxc4
        • 2.Qxd4#
      • 1...bxc4!
  • Keys
    • 1.Rxb2!
      • threat
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qc7#
        • 2.Qxd4#
      • 1...Kc4
        • 2.Qxd4#
      • 1...Bxf3
        • 2.Qxd4#
      • 1...S1xf3
        • 2.Qc7#
      • 1...S5xf3
        • 2.Qc1#
      • 1...Sxe6
        • 2.Rc2#
        • 2.Qc1#
      • 1...bxa4
        • 2.Qc1#
        • 2.Qc7#
        • 2.Qxd4#
      • 1...Qh2
        • 2.Rc2#
      • 1...Qh4
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qc7#
      • 1...Rg4
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qc7#
      • 1...Rh4
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qc7#
      • 1...Bd1
        • 2.Qc7#
        • 2.Qxd4#
      • 1...Bf1
        • 2.Qc7#
        • 2.Qxd4#
      • 1...S1h3
        • 2.Rc2#
        • 2.Qc7#
        • 2.Qxd4#
      • 1...S5h3
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qxd4#
      • 1...Se4
        • 2.Rc2#
        • 2.Qc1#
      • 1...Sf7
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qxd4#
      • 1...Sh7
        • 2.Rc2#
        • 2.Qc1#
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAR2(E)
  • Tries
    • Try
      • R(B);CHECK,XP(g)
      • Vars
        • K(f);P-FLIGHT,XR(B)::QAR1(E),XP(h)
      • Refutation
        • B(d);XR(B)
    • Try
      • R(D);CHECK
      • Vars
        • K(f);N_SPINP(g),P-FLIGHT,P_SPINP(h)::QAR1(E),XP(h)
      • Refutation
        • K(f);N_SPINP(g),P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(f);N_SPINP(g),P-FLIGHT,P_SPINP(h),XR(D)::QAR1(E),XP(h)
      • Refutation
        • P(i);XR(D)
  • Actual
    • R(D);XP(c)
    • Threat
      • DUALS(4)
    • Vars
      • K(f);N_SPINP(g),P-FLIGHT,P_SPINP(h)::QAR1(E),XP(h)
      • B(d);N_SPINP(g),XR(B)::QAB1(E),XP(h)
      • S(a);N_SPINP(g),XR(B)::QAR(E)
      • S(j);N_SPINP(g),XR(B)::QAR2(E)
      • Q(b);P_PINQ(E)::R1(D)
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