MESON Chess Problem Database

Problem Display
PID: 219896 (8/3N4/5p2/2p2rp1/2QbkpK1/5p2/2P2P2/8 w - - 0 1)

Liphardt, Bodo

Land og Folk, 1971

(First published on Sun May 23 1971)

8/3N4/5p2/2p2rp1/2QbkpK1/5p2/2P2P2/8

#2

5 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qd3#
    • 1...Re5
      • 2.Sxf6#
  • Tries
    • 1.Sxc5+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Rxc5!
    • 1.Qb3?
      • threat
        • 2.Qxf3#
      • 1...Bxf2
        • 2.Qd3#
      • 1...Ba1
        • 2.Qd3#
      • 1...Bb2
        • 2.Qd3#
      • 1...Be3
        • 2.Qd3#
      • 1...Be5
        • 2.Qd3#
      • 1...Bc3!
    • 1.Qb5?
      • 1...Bxf2
        • 2.Qd3#
      • 1...Ba1
        • 2.Qd3#
      • 1...Bb2
        • 2.Qd3#
      • 1...Bc3
        • 2.Qd3#
      • 1...Be3
        • 2.Qd3#
      • 1...Be5
        • 2.Qd3#
      • 1...Rd5
        • 2.Qd3#
      • 1...Re5
        • 2.Sxf6#
      • 1...c4
        • 2.Qxf5#
      • 1...Kd5!
    • 1.Qe6+?
      • 1...Re5
        • 2.Sxf6#
      • 1...Be5!
    • 1.c3?
      • 1...Re5
        • 2.Sxf6#
      • 1...Rd5!
  • Keys
    • 1.Sb6!
      • 1...Ke5
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Re5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::QAB1(C)
    • R(f);N_GUARD,SBLOCK::S(E),XP(h)
  • Tries
    • Try
      • S(E);CHECK,XP(e)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR1(C)
      • Refutation
        • R(f);XS(E)
    • Try
      • Q(C);N_PINB(b)
      • Threat
        • QAB1(C),XP(a)
      • Vars
        • B(b);XP(B)::QAB1(C)
        • B(b);::QAB1(C)
      • Refutation
        • B(b);
    • Try
      • Q(C);N_PINB(b)
      • Vars
        • B(b);XP(B)::QAB1(C)
        • B(b);::QAB1(C)
        • R(f);SBLOCK::QAB1(C)
        • R(f);N_GUARD,SBLOCK,S_CUTB(b)::S(E),XP(h)
        • P(e);OGATE::QAB1(C),XR(f)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINB(b)
      • Vars
        • R(f);P_SPINR(f)::S(E),XP(h)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • P(A);
      • Vars
        • R(f);N_GUARD,SBLOCK::S(E),XP(h)
      • Refutation
        • R(f);
  • Actual
    • S(E);
    • Vars
      • K(c);N_SPINB(b),P-FLIGHT::QAR1(C)
      • R(f);N_GUARD::QAB1(C),XR(f)
      • R(f);SBLOCK::QAB1(C)
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