MESON Chess Problem Database

Problem Display
PID: 237704 (8/8/8/8/3RK1Q1/4P3/4p3/3N1k2 w - - 0 1)

Kuzmichev, Vladimir Viktorovich

The Problemist, 1988

8/8/8/8/3RK1Q1/4P3/4p3/3N1k2

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qg1#
  • Tries
    • 1.Kf3?
      • 1...exd1Q+
        • 2.Rxd1#
      • 1...exd1B+
        • 2.Rxd1#
      • 1...Ke1
        • 2.Qg1#
      • 1...exd1S
        • 2.Rxd1#
      • 1...exd1R
        • 2.Rxd1#
      • 1...e1Q
        • 2.Qg2#
      • 1...e1B
        • 2.Qg2#
      • 1...e1R
        • 2.Qg2#
      • 1...e1S+!
    • 1.Qf3+?
      • 1...Ke1
        • 2.Qh1#
        • 2.Qf2#
      • 1...Kg1!
    • 1.Qh3+?
      • 1...Ke1
        • 2.Qh1#
      • 1...Kg1!
    • 1.Qg2+?
      • 1...Ke1
        • 2.Qh1#
        • 2.Qg1#
        • 2.Qf2#
      • 1...Kxg2!
  • Keys
    • 1.Rd2!
      • 1...Ke1
        • 2.Qxe2#
      • 1...exd1Q
        • 2.Qxd1#
      • 1...exd1S
        • 2.Qxd1#
      • 1...exd1B
        • 2.Qxd1#
      • 1...exd1R
        • 2.Qxd1#
      • 1...e1Q
        • 2.Qg2#
      • 1...e1S
        • 2.Rf2#
      • 1...e1B
        • 2.Qg2#
      • 1...e1R
        • 2.Rf2#
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(E)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);CHECK,OGATE,XS(A)::R(C),XQ(b)
        • P(b);CHECK,OGATE,XS(A)::R(C),XB(b)
        • K(a);P-FLIGHT::QAR2(E)
        • P(b);OGATE,XS(A)::R(C),XS(b)
        • P(b);OGATE,XS(A)::R(C),XR(b)
        • P(b);SBLOCK::QAB1(E)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(E),XP(b)
      • P(b);OGATE,XS(A)::QAR2(E),XQ(b)
      • P(b);OGATE,XS(A)::QAR2(E),XS(b)
      • P(b);OGATE,XS(A)::QAR2(E),XB(b)
      • P(b);OGATE,XS(A)::QAR2(E),XR(b)
      • P(b);P_PINP(B),SBLOCK::QAB1(E)
      • P(b);OGATE,SBLOCK::R1(C)
      • P(b);SBLOCK::QAB1(E)
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