MESON Chess Problem Database

Problem Display
PID: 179183 (8/8/8/RB6/1Q6/5p2/3r4/4k2K w - - 0 1)

Nikitin, Vladimir V

Phenix, 2013

8/8/8/RB6/1Q6/5p2/3r4/4k2K

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qb1#
    • 1...f2
      • 2.Ra1#
  • Tries
    • 1.Kg1?
      • threat
        • 2.Ra1#
      • 1...Kd1
        • 2.Qb1#
      • 1...f2+!
    • 1.Bd3?
      • 1...Kd1
        • 2.Ra1#
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Bc4?
      • 1...Kd1
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Ba6?
      • 1...Kd1
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Ra2?
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
        • 2.Qb1#
      • 1...Kf2!
    • 1.Ra4?
      • 1...Kd1
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Ra6?
      • 1...Kd1
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Ra7?
      • 1...Kd1
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Ra8?
      • 1...Kd1
        • 2.Qb1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Qc3?
      • 1...Kd1
        • 2.Ra1#
      • 1...f2
        • 2.Ra1#
      • 1...Kf2!
    • 1.Qb1+?
      • 1...Kf2
        • 2.Qg1#
      • 1...Rd1!
  • Keys
    • 1.Ra3!
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf2
        • 2.Qh4#
      • 1...f2
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
    • P(c);SBLOCK::R(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • R(C)
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
      • Refutation
        • P(c);CHECK
    • Try
      • B(D);
      • Vars
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(B),XR(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::R(C)
        • P(c);SBLOCK::R(C)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • Q(B);CHECK,N_PINR(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • R(C);
    • Vars
      • K(a);N_SPINR(b),P-FLIGHT::QAR2(B)
      • K(a);N_SPINR(b),S_FLIGHT::QAB(B)
      • P(c);SBLOCK::R(C)
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