MESON Chess Problem Database

Problem Display
PID: 194457 (3Q4/8/4p3/4kp1R/6n1/4pP2/6K1/6B1 w - - 0 1)

Helweg, Steffen ('Cyrano')

Probleemblad, 1978

3Q4/8/4p3/4kp1R/6n1/4pP2/6K1/6B1

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qd4#
    • 1...Sf2
      • 2.Bh2#
    • 1...Sh2
      • 2.Bxh2#
    • 1...Sf6
      • 2.Bh2#
    • 1...Sh6
      • 2.Bh2#
    • 1...e2
      • 2.Qd4#
  • Tries
    • 1.Rg5?
      • 1...Sf2
        • 2.Bh2#
      • 1...Sh2
        • 2.Bxh2#
      • 1...Sf6
        • 2.Bh2#
      • 1...Sh6
        • 2.Bh2#
      • 1...e2
        • 2.Qd4#
      • 1...Kf4!
    • 1.fxg4?
      • 1...Kf4
        • 2.Qd4#
      • 1...e2
        • 2.Qd4#
      • 1...Ke4!
    • 1.f4+?
      • 1...Kxf4
        • 2.Qd4#
      • 1...Ke4!
  • Keys
    • 1.Rh4!
      • 1...Kf4
        • 2.Bh2#
      • 1...Sf2
        • 2.Qd4#
      • 1...Sh2
        • 2.Qd4#
      • 1...Sf6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...e2
        • 2.Qd4#
      • 1...f4
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(d),S_FLIGHT::QAR2(E)
    • S(b);N_GUARD::B(A)
    • S(b);N_GUARD::B(A),XS(b)
    • P(a);::QAB1(E)
  • Tries
    • Try
      • R(D);
      • Vars
        • S(b);N_GUARD::B(A)
        • S(b);N_GUARD::B(A),XS(b)
        • P(a);::QAB1(E)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • P(C);XS(b)
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(E)
        • P(a);::QAB1(E)
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT,XP(C)::QAR2(E)
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT
  • Actual
    • R(D);N_PINP(d)
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::B(A)
      • S(b);::QAB1(E)
      • S(b);SBLOCK::QAB1(E)
      • P(a);::QAB1(E)
      • P(d);OGATEB,SBLOCK::R(D)
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