MESON Chess Problem Database

Problem Display
PID: 243567 (1b4KB/q1p5/2P1N2R/1r1k2P1/1P3Q2/Pb1Nn3/8/3R4 w - - 0 1)

Dimitrov, Nikolai

Revista Romana de Sah, 1961

1b4KB/q1p5/2P1N2R/1r1k2P1/1P3Q2/Pb1Nn3/8/3R4

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Sxb4#
  • Tries
    • 1.Sec5?
      • threat
        • 2.Qd4#
        • 2.Qe4#
        • 2.Qf7#
      • 1...Rxb4
        • 2.Qf7#
      • 1...Rxc5
        • 2.Qd4#
      • 1...Sc2
        • 2.Qe4#
        • 2.Qf7#
      • 1...Sf5
        • 2.Qe4#
      • 1...Qxc5!
    • 1.Sxc7+?
      • 1...Qxc7
        • 2.Qd4#
      • 1...Bxc7!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Sb2#
      • 1...Kxc6!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Sb2#
      • 1...Kd6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Sec5#
      • 1...Kc4
        • 2.Sb2#
      • 1...Ke4
        • 2.Sf2#
      • 1...Kxc6
        • 2.Sd8#
      • 1...Kd6
        • 2.Qd7#
      • 1...Qc5
        • 2.Sexc5#
      • 1...Rc5
        • 2.Sexc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(c);XP(D)::R(A)+S(C),DCHECK,XR(c)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);XP(D)::QAB(E)
        • R(c);XS(H)::QAR1(E)
        • S(b);::QAB1(E)
      • Refutation
        • Q(e);XS(H)
    • Try
      • S(H);CHECK,XP(f)
      • Vars
        • Q(e);XS(H)::QAR1(E)
      • Refutation
        • B(g);XS(H)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT::S(C)
      • Refutation
        • K(d);P_PINS(H),S_FLIGHT,XP(G)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT::S(C)
      • Refutation
        • K(d);P-FLIGHT,P_PINS(H)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)+S(H)
    • Vars
      • K(d);S_FLIGHT::S(C)
      • K(d);S_FLIGHT,XP(G)::R(I)+S(H),DCHECK
      • K(d);P-FLIGHT::QAR1(E)
      • Q(e);::QAB(E)+S(H),XQ(e)
      • R(c);::QAB(E)+S(H),XR(c)
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