MESON Chess Problem Database

Problem Display
PID: 245772 (8/2N5/2p1Np1K/5k1n/5rp1/5nq1/B1R5/B4R1Q w - - 0 1)

Wrobel, Marian

Arbejder-Skak, 1949

8/2N5/2p1Np1K/5k1n/5rp1/5nq1/B1R5/B4R1Q

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxh5#
    • 1...Se1
      • 2.Rc5#
    • 1...Sg1
      • 2.Rc5#
    • 1...Sd2
      • 2.Rc5#
    • 1...Sh2
      • 2.Rc5#
    • 1...Sd4
      • 2.Rc5#
    • 1...Sh4
      • 2.Rc5#
    • 1...Se5
      • 2.Sd4#
    • 1...Sg5
      • 2.Rc5#
  • Tries
    • 1.Rc5+?
      • 1...Se5
        • 2.Sd4#
      • 1...Ke4!
    • 1.Qxh5+?
      • 1...Sg5
        • 2.Qg6#
      • 1...Ke4!
  • Keys
    • 1.Bb1!
      • threat
        • 2.Rc5#
      • 1...Ke4
        • 2.Re2#
      • 1...Rc4
        • 2.Rxc4#
      • 1...Re4
        • 2.Qxh5#
      • 1...Se5
        • 2.Sd4#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(c);P_SPINS(a),SBLOCK::QAR2(C),XS(f)
    • S(a);N_GUARD,P_SPINR(c)::R(E)
    • S(a);N_GUARD,P_SPINR(c),SBLOCK::S(F)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • S(a);P_SPINR(c),P_SPINS(a)::S(F)
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT
    • Try
      • Q(C);CHECK,XS(f)
      • Vars
        • S(a);P_SPINR(c),P_SPINS(a)::QAB1(C)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • B(D)+R(E),DCHECK
    • Vars
      • K(e);P_SPINS(a),S_FLIGHT::B(D)+R(E),DCHECK
      • R(c);N_GUARD,P_SPINS(a)::B(D)+R(E),XR(c)
      • R(c);P_SPINS(a),SBLOCK::QAR2(C),XS(f)
      • S(a);N_GUARD,P_SPINR(c),SBLOCK::S(F)
      • P(g);::B(D)+R(E),DCHECK,XP(g)
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Developed and maintained by Brian Stephenson.
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