MESON Chess Problem Database

Problem Display
PID: 206317 (5K2/2Q5/5B2/1p6/1P2p3/3k4/n1R5/3rr2R w - - 0 1)

Mulack, Hermann

L'Alfiere di Re, 1925

5K2/2Q5/5B2/1p6/1P2p3/3k4/n1R5/3rr2R

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Rh3#
      • 2.Qg3#
    • 1...Re3
      • 2.Rxd1#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sxb4
      • 2.Qc3#
    • 1...e3
      • 2.Qh7#
  • Tries
    • 1.Rh3+?
      • 1...e3
        • 2.Qh7#
      • 1...Re3!
    • 1.Qd6+?
      • 1...Ke3
        • 2.Rh3#
        • 2.Qg3#
      • 1...Kxc2!
  • Keys
    • 1.Qh2!
      • 1...Ke3
        • 2.Qg3#
      • 1...Rxh1
        • 2.Qe2#
      • 1...Sxb4
        • 2.Rc3#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Re2
        • 2.Qxe2#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Ra1
        • 2.Qd2#
      • 1...Rb1
        • 2.Qd2#
      • 1...Rc1
        • 2.Qd2#
      • 1...Rf1
        • 2.Qe2#
      • 1...Rg1
        • 2.Qe2#
      • 1...Re3
        • 2.Rxd1#
      • 1...Sc1
        • 2.Rc3#
      • 1...e3
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,SBLOCK::R(A),XR(a)
    • S(c);N_GUARD::QAR1(E)
    • S(c);N_GUARD::QAR1(E),XS(c)
    • S(c);N_GUARD,XP(C)::QAR1(E)
    • P(e);OGATEB,SBLOCK::QAB(E)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(e);P_SPINP(e),S_CUTR(b)::QAB(E)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(d);S_FLIGHT,XR(B)
  • Actual
    • Q(E);
    • Vars
      • K(d);P-FLIGHT::QAR2(E)
      • R(b);N_GUARD,XR(A)::QAB1(E)
      • S(c);N_GUARD,XP(C)::R1(B)
      • R(a);N_GUARD::QAR1(E),XR(a)
      • R(b);N_GUARD::QAB1(E),XR(b)
      • S(c);N_GUARD::R1(B),XS(c)
      • R(a);N_GUARD::QAR1(E)
      • R(b);N_GUARD,P_PINB(D)::QAB1(E)
      • R(b);N_GUARD::QAB1(E)
      • R(b);OGATE,SBLOCK::R(A),XR(a)
      • S(c);N_GUARD::R1(B)
      • P(e);OGATEB,SBLOCK::QAB(E)
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