MESON Chess Problem Database

Problem Display
PID: 282351 (1r6/1B6/2R5/3R4/8/b3N2N/K3P2p/5b1k w - - 0 1)

Marker, Yuri

Szachy, 1978

1r6/1B6/2R5/3R4/8/b3N2N/K3P2p/5b1k

#2

7 + 5

15601 Albrecht-Leiss-Degener Collection 2025

SOLUTION

  • SOUND
  • Tries
    • 1.Rc1?
      • threat
        • 2.Rxf1#
      • 1...Rf8
        • 2.Rf5#
      • 1...Rg8
        • 2.Rg5#
      • 1...Bxc1!
    • 1.Rf6?
      • threat
        • 2.Rxf1#
      • 1...Bxe2
        • 2.Rd1#
      • 1...Bxh3
        • 2.Rd1#
      • 1...Rf8
        • 2.Rd1#
      • 1...Bg2
        • 2.Rd1#
      • 1...Rg8!
    • 1.Rg6?
      • threat
        • 2.Sf2#
      • 1...Bxh3
        • 2.Rd1#
      • 1...Bg2
        • 2.Rd1#
      • 1...Rf8!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Rxf1#
      • 1...Rf8
        • 2.Rf6#
      • 1...Rg8
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);P_PINB(a)
      • Threat
        • R(F),XB(a)
      • Vars
        • R(e);N_GUARD::B(G)+R(E)
      • Refutation
        • B(d);N_SPINB(a),XR(F)
    • Try
      • R(F);
      • Threat
        • R(F),XB(a)
      • Vars
        • B(a);XP(B)::B(G)+R(E),DCHECK
        • B(a);XS(D)::B(G)+R(E),DCHECK
        • R(e);N_GUARD::B(G)+R(E)
        • B(a);S_CUTR(e)::R(E)
      • Refutation
        • R(e);
    • Try
      • R(F);
      • Threat
        • S(D)
      • Vars
        • B(a);XS(D)::B(G)+R(E),DCHECK
        • B(a);S_CUTR(e)::R(E)
      • Refutation
        • R(e);
  • Actual
    • R(E);P_PINB(a)
    • Threat
      • R(E),XB(a)
    • Vars
      • R(e);N_GUARD::B(G)+R(F)
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