MESON Chess Problem Database

Problem Display
PID: 18832 (6K1/8/2Q5/8/6B1/8/5pP1/5kr1 w - - 0 1)

Studenetsky, Alexei

Shakhmaty v SSSR, 1958

6K1/8/2Q5/8/6B1/8/5pP1/5kr1

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qc1#
    • 1...Rxg2
      • 2.Qc1#
  • Tries
    • 1.Kf7?
      • 1...Ke1
        • 2.Qc1#
      • 1...Rxg2
        • 2.Qc1#
      • 1...Rh1!
    • 1.Kg7?
      • 1...Ke1
        • 2.Qc1#
      • 1...Rxg2
        • 2.Qc1#
      • 1...Rh1!
    • 1.Kh7?
      • 1...Ke1
        • 2.Qc1#
      • 1...Rxg2
        • 2.Qc1#
      • 1...Rh1+!
    • 1.Kf8?
      • 1...Ke1
        • 2.Qc1#
      • 1...Rxg2
        • 2.Qc1#
      • 1...Rh1!
    • 1.Kh8?
      • 1...Ke1
        • 2.Qc1#
      • 1...Rxg2
        • 2.Qc1#
      • 1...Rh1+!
    • 1.Bf3?
      • threat
        • 2.Qc1#
      • 1...Ke1
        • 2.Qc1#
      • 1...Rxg2+!
    • 1.Qf3?
      • 1...Ke1
        • 2.Qd1#
        • 2.Qe2#
      • 1...Rxg2
        • 2.Qd1#
      • 1...Rh1!
    • 1.Qe4?
      • 1...Rxg2
        • 2.Qb1#
      • 1...Rh1!
    • 1.Qb5+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kxg2!
    • 1.Qd5?
      • 1...Ke1
        • 2.Qd1#
      • 1...Rxg2
        • 2.Qd1#
      • 1...Rh1!
    • 1.Qc3?
      • 1...Kxg2
        • 2.Qh3#
      • 1...Rxg2
        • 2.Qa1#
        • 2.Qc1#
      • 1...Rh1!
    • 1.Qc4+?
      • 1...Ke1
        • 2.Qe2#
        • 2.Qc1#
      • 1...Kxg2!
    • 1.Qa6+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kxg2!
    • 1.g3?
      • 1...Ke1
        • 2.Qc1#
      • 1...Rh1
        • 2.Qxh1#
      • 1...Rg2
        • 2.Qc1#
      • 1...Rxg3!
  • Keys
    • 1.Qh6!
      • 1...Ke1
        • 2.Qc1#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Rxg2
        • 2.Qc1#
      • 1...Rh1
        • 2.Qxh1#

This anticipates 118733(1959)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
    • R(b);P_PINB(B),SBLOCK,XP(A)::QAR(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • R(b);SBLOCK,XP(A)::QAR(C)
      • Refutation
        • R(b);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • R(b);P_PINB(B),SBLOCK,XP(A)::QAR(C)
      • Refutation
        • R(b);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • R(b);SBLOCK,XP(A)::QAR(C)
      • Refutation
        • R(b);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • R(b);SBLOCK,XP(A)::QAR(C)
      • Refutation
        • R(b);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • R(b);SBLOCK,XP(A)::QAR(C)
      • Refutation
        • R(b);CHECK
    • Try
      • B(B);P_SPINP(A)
      • Threat
        • QAR(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • R(b);CHECK,XP(A)
    • Try
      • Q(C);P_PINP(c)
      • Vars
        • R(b);P_PINB(B),SBLOCK,XP(A)::QAR2(C)
      • Refutation
        • R(b);
    • Try
      • Q(C);
      • Vars
        • R(b);P_PINB(B),SBLOCK,XP(A)::QAR(C)
      • Refutation
        • R(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XP(A)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • R(b);P_PINB(B),SBLOCK,XP(A)::QAR2(C)
      • Refutation
        • R(b);
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(A)::QAB1(C)
      • Refutation
        • R(b);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XP(A)
    • Try
      • P(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • R(b);OGATEB::QAR2(C),XR(b)
        • R(b);SBLOCK::QAR(C)
      • Refutation
        • R(b);P_PINB(B),XP(A)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);OGATEB,S_FLIGHT,XP(A)::QAB1(C)
      • R(b);P_PINB(B),SBLOCK,XP(A)::QAR(C)
      • R(b);OGATEB::QAR2(C),XR(b)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).