MESON Chess Problem Database

Problem Display
PID: 200422 (8/8/8/8/3P2N1/r1pQ1Kp1/6p1/R2N2k1 w - - 0 1)

Markovtsy, Vassyl Yuriovich

1st Comm., Sachova skladba, 1999

8/8/8/8/3P2N1/r1pQ1Kp1/6p1/R2N2k1

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kh1
      • 2.Sdf2#
    • 1...Rb3
      • 2.Sb2#
  • Tries
    • 1.Rc1?
      • threat
        • 2.Sb2#
        • 2.Sdf2#
        • 2.Sxc3#
        • 2.Sde3#
      • 1...Kh1
        • 2.Sdf2#
      • 1...c2
        • 2.Sb2#
        • 2.Sdf2#
        • 2.Sc3#
        • 2.Sde3#
      • 1...Ra1!
    • 1.Qc2?
      • threat
        • 2.Qxg2#
      • 1...Kf1
        • 2.Sde3#
      • 1...Kh1
        • 2.Sdf2#
        • 2.Qxg2#
      • 1...Ra2!
    • 1.Qe2?
      • threat
        • 2.Qe1#
        • 2.Qxg2#
      • 1...Kh1
        • 2.Sdf2#
        • 2.Qxg2#
      • 1...Ra2
        • 2.Qe1#
      • 1...c2+!
    • 1.Qe4?
      • threat
        • 2.Qe1#
      • 1...Kf1
        • 2.Sde3#
      • 1...Kh1
        • 2.Sdf2#
      • 1...c2+!
    • 1.Qe3+?
      • 1...Kh1
        • 2.Sdf2#
      • 1...Kf1!
  • Keys
    • 1.Qxc3!
      • 1...Rxc3+
        • 2.Sxc3#
      • 1...Kf1
        • 2.Sde3#
      • 1...Kh1
        • 2.Sdf2#
      • 1...Rxa1
        • 2.Qe1#
      • 1...Ra2
        • 2.Qe1#
      • 1...Rb3
        • 2.Sb2#
      • 1...Ra4
        • 2.Qe1#
      • 1...Ra5
        • 2.Qe1#
      • 1...Ra6
        • 2.Qe1#
      • 1...Ra7
        • 2.Qe1#
      • 1...Ra8
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(A)+S(B),DCHECK
    • R(c);N_GUARD::R(A)+S(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(4)
      • Vars
        • K(a);P-FLIGHT::R(A)+S(B),DCHECK
      • Refutation
        • R(c);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::R(A)+S(B),DCHECK
      • Refutation
        • R(c);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAR2(C)
      • Refutation
        • P(d);CHECK
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::R(A)+S(B),DCHECK
      • Refutation
        • P(d);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::R(A)+S(B),DCHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);P_SPINQ(C),XP(d)
    • Vars
      • R(c);CHECK,XQ(C)::R(A)+S(B),XR(c)
      • K(a);P-FLIGHT::R(A)+S(B),DCHECK
      • R(c);N_PINQ(C),XR(A)::QAR2(C)
      • R(c);N_PINQ(C)::QAR2(C)
      • R(c);N_GUARD::R(A)+S(B)
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