MESON Chess Problem Database

Problem Display
PID: 206481 (6BK/1R5Q/8/4R3/8/pN6/PkP5/b7 w - - 0 1)

ten Cate, Pieter

British Chess Magazine, 1925

6BK/1R5Q/8/4R3/8/pN6/PkP5/b7

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa2
      • 2.Sc1#
      • 2.Sd2#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Sc5#
  • Tries
    • 1.Sxa1+?
      • 1...Kxa1
        • 2.Re1#
        • 2.Qh1#
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc1!
    • 1.Sc1+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kxc1!
    • 1.Sd2+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc1!
    • 1.Sd4+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc1!
    • 1.Sa5+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc1!
    • 1.Sc5+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc1!
    • 1.Re1?
      • 1...Kxa2+
        • 2.Sxa1#
        • 2.Sd4#
      • 1...Kc3!
    • 1.Re3?
      • 1...Kxa2+
        • 2.Sd4#
      • 1...Kb1+!
    • 1.Rc5?
      • 1...Kxa2+
        • 2.Sd4#
      • 1...Kb1+!
    • 1.Qd3?
      • 1...Kxa2
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Sc5#
      • 1...Kb1!
    • 1.Qc7?
      • 1...Kxa2
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Sc5#
      • 1...Kb1!
    • 1.c3?
      • 1...Kxa2
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Sc5#
      • 1...Kxc3!
    • 1.c4?
      • 1...Kxa2
        • 2.Sc1#
      • 1...Kc3!
  • Keys
    • 1.Re2!
      • 1...Kb1+
        • 2.c3#
      • 1...Kxa2+
        • 2.Sd4#
      • 1...Kc3
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK,XB(a)
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);P_PINR(D),S_FLIGHT,XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);P_PINR(D),S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);P_PINR(D),S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);P_PINR(D),S_FLIGHT
    • Try
      • R(D);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);CHECK,P-FLIGHT,XP(A)::B(G)+S(C)
      • Refutation
        • K(b);CHECK,P-FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);CHECK,P-FLIGHT,XP(A)::B(G)+S(C)
      • Refutation
        • K(b);CHECK,P-FLIGHT
    • Try
      • Q(F);
      • Refutation
        • K(b);P-FLIGHT,P_PINR(D)
    • Try
      • Q(F);
      • Refutation
        • K(b);P-FLIGHT,P_PINR(D)
    • Try
      • P(B);
      • Refutation
        • K(b);S_FLIGHT,XP(B)
    • Try
      • P(B);
      • Vars
        • K(b);P-FLIGHT,P_PINR(D),XP(A)::S(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(b);CHECK,P-FLIGHT::QAB(F)+P(B)
      • K(b);CHECK,P-FLIGHT,XP(A)::B(G)+S(C)
      • K(b);S_FLIGHT::QAB(F)
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