MESON Chess Problem Database

Problem Display
PID: 244572 (3r4/3R4/5p2/rR1pN3/1Ppk4/4pP2/p6Q/K5B1 w - - 0 1)

Bunka, Vladislav

Sachove umeni (Ceskoslovensky sach), 1961

3r4/3R4/5p2/rR1pN3/1Ppk4/4pP2/p6Q/K5B1

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qb2#
    • 1...c3
      • 2.Qf4#
    • 1...fxe5
      • 2.Qd2#
  • Tries
    • 1.Bxe3+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe3!
    • 1.Rbxd5+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Rxd5!
    • 1.Rdxd5+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Rxd5!
    • 1.Re7?
      • threat
        • 2.Qd2#
      • 1...Kc3
        • 2.Qb2#
      • 1...c3
        • 2.Qf4#
        • 2.Qh4#
      • 1...Ra3!
    • 1.Qh4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kc3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.Qe4#
      • 1...fxe5
        • 2.Qd2#
      • 1...Ra6
        • 2.Rbxd5#
      • 1...Rc8
        • 2.Rdxd5#
      • 1...c3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINP(b),S_FLIGHT::QAB1(C)
    • P(c);SBLOCK::QAR2(C)
    • P(g);SBLOCK,XS(G)::QAR2(C)
  • Tries
    • Try
      • B(B);CHECK,P_PINP(f),XP(b)
      • Vars
        • K(d);N_SPINP(f),S_FLIGHT::QAB1(C)
      • Refutation
        • K(d);N_SPINP(f),S_FLIGHT,XB(B)
    • Try
      • R(F);CHECK,XP(f)
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT::QAB1(C)
      • Refutation
        • R(e);P_SPINR(e),XR(F)
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT::QAB1(C)
      • Refutation
        • R(h);XR(H)
    • Try
      • R(H);
      • Threat
        • QAR2(C)
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT::QAB1(C)
      • Refutation
        • R(e);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_SPINP(b),P_SPINP(f),S_FLIGHT,XS(G)::QAR1(C)
      • Refutation
        • K(d);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • S(G)
    • Vars
      • K(d);N_SPINP(b),P_SPINP(f),S_FLIGHT,XS(G)::QAR1(C)
      • P(g);SBLOCK,XS(G)::QAR2(C)
      • R(e);N_GUARD::R1(F),XP(f)
      • R(h);N_GUARD::R1(H),XP(f)
      • P(c);SBLOCK::QAR1(C)
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