MESON Chess Problem Database

Problem Display
PID: 206571 (3R4/2pN4/2Bp4/2p5/P1k4p/Q5bR/3Pn3/7K w - - 0 1)

Dobrik, Endre

Nepszava, 1925

3R4/2pN4/2Bp4/2p5/P1k4p/Q5bR/3Pn3/7K

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qc3#
    • 1...Sg1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sd4
      • 2.Qc3#
      • 2.d3#
    • 1...Sf4
      • 2.Qc3#
  • Tries
    • 1.Se5+?
      • 1...Kd4
        • 2.Qe3#
      • 1...dxe5
        • 2.Bb5#
        • 2.d3#
      • 1...Bxe5!
    • 1.Sb6+?
      • 1...Kd4
        • 2.Qe3#
      • 1...cxb6!
    • 1.Bb5+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Kd5!
    • 1.Qb3+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxb3!
  • Keys
    • 1.Qb2!
      • 1...Kd3
        • 2.Se5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Be1
        • 2.d3#
      • 1...Bf2
        • 2.d3#
      • 1...Bh2
        • 2.d3#
      • 1...Bf4
        • 2.d3#
      • 1...Be5
        • 2.d3#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sg1
        • 2.Qc3#
      • 1...Sd4
        • 2.Qc3#
      • 1...Sf4
        • 2.Qc3#
      • 1...d5
        • 2.Bb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(C)
    • S(a);N_GUARD::QAR1(C),XS(a)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(f)::QAB1(C)
      • Refutation
        • B(b);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(f)::QAB1(C)
      • Refutation
        • P(g);XS(G)
    • Try
      • B(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(c);P_SPINB(b),S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(c);P_SPINB(b),S_FLIGHT::S(G)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • B(b);::P(B)
      • S(a);N_GUARD::QAR1(C)
      • P(f);SBLOCK::B(F)
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