MESON Chess Problem Database

Problem Display
PID: 186681 (K1B3b1/1R4Q1/4n3/4Nk1p/2p5/2N1prp1/5pq1/8 w - - 0 1)

Mere, S

Chess, 1960

K1B3b1/1R4Q1/4n3/4Nk1p/2p5/2N1prp1/5pq1/8

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qf6#
    • 1...Bf7
      • 2.Rxf7#
    • 1...Bh7
      • 2.Rf7#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Qg5#
      • 1...Bxf7
        • 2.Rxf7#
      • 1...Kf4!
    • 1.Qg6+?
      • 1...Kf4
        • 2.Qf6#
      • 1...Kxe5!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Sd3#
      • 1...Rf4+
        • 2.Sf3#
      • 1...Kf4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(g);N_SPINS(i),P-FLIGHT::QAR2(D)
    • B(j);N_GUARD::R(C),XB(j)
    • B(j);N_GUARD::R(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(D)
      • Vars
        • B(j);OGATE,XS(B)::R(C),XB(j)
      • Refutation
        • K(g);N_SPINS(i),P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(g);N_SPINS(i),P-FLIGHT::QAR2(D)
      • Refutation
        • K(g);N_SPINS(i),P-FLIGHT,XS(B)
  • Actual
    • R(C);
    • Threat
      • R(C)+S(B)
    • Vars
      • R(d);CHECK,SBLOCK::R(C)+S(B)
      • K(g);N_SPINS(i),P-FLIGHT::QAR2(D)
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