MESON Chess Problem Database

Problem Display
PID: 92014 (8/5p2/4pB2/N3R3/Nn1k1p2/2R1r3/pp1n2p1/qrbK2Q1 w - - 0 1)

Ratko, J

3rd Prize, Qyorer Schachzeitung, 1924

8/5p2/4pB2/N3R3/Nn1k1p2/2R1r3/pp1n2p1/qrbK2Q1

#2

7 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Sb3#
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sf3
      • 2.Sb3#
    • 1...Sc4
      • 2.Sb3#
    • 1...Se4
      • 2.Sb3#
    • 1...Sc2
      • 2.Sc6#
    • 1...Sd3
      • 2.Sc6#
    • 1...Sd5
      • 2.Sc6#
    • 1...Sa6
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...f3
      • 2.Qxe3#
  • Tries
    • 1.Rc4+?
      • 1...Kd3
        • 2.Sc5#
      • 1...Sxc4!
    • 1.Rexe3+?
      • 1...e5
        • 2.Rxe5#
      • 1...Kd5!
    • 1.Re4+?
      • 1...Kd5
        • 2.Rd4#
      • 1...Kxe4!
  • Keys
    • 1.Sc5!
      • 1...Kxc3
        • 2.Rxe3#
      • 1...Sf1
        • 2.Rc4#
      • 1...Sb3
        • 2.Rc4#
      • 1...Sf3
        • 2.Rc4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Se4
        • 2.Rc4#
      • 1...Sc2
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd5
        • 2.Re4#
      • 1...Sa6
        • 2.Rd3#
      • 1...Sc6
        • 2.Rd3#
      • 1...f3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 10
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::S(E)
    • S(f);N_GUARD::S(E),XS(f)
    • S(i);N_GUARD::S(E)
    • S(i);N_GUARD::S(E),XS(i)
    • P(k);N_GUARD::QAB1(B),XR(h)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(j);N_SPINR(h),P-FLIGHT::S(D)
      • Refutation
        • S(f);XR(C)
    • Try
      • R(F);CHECK,XR(h)
      • Vars
        • P(l);P_SPINP(l)::QAB(B)+R(F),XP(l)
      • Refutation
        • K(j);P-FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(j);N_SPINR(h),P-FLIGHT::R1(F)
      • Refutation
        • K(j);N_SPINR(h),P-FLIGHT,XR(F)
  • Actual
    • S(D);
    • Vars
      • K(j);N_SPINR(h),S_FLIGHT,XR(C)::B(G)+R(F),DCHECK,XR(h)
      • S(f);N_GUARD::R1(C)
      • S(f);N_GUARD::R1(C),XS(f)
      • S(i);N_GUARD::R1(C)
      • S(i);N_GUARD::R1(C),XS(i)
      • S(i);SBLOCK::B(G)+R(F),DCHECK
      • P(k);N_GUARD::QAB1(B),XR(h)
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