MESON Chess Problem Database

Problem Display
PID: 103169 (8/3p4/2Q5/8/6P1/8/4K1Rb/7k w - - 0 1)

Markovtsy, Vassyl Yuriovich

Umenie 64, 2003

8/3p4/2Q5/8/6P1/8/4K1Rb/7k

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rxh2+?
      • 1...Kg1
        • 2.Rh1#
        • 2.Qh1#
        • 2.Qg2#
      • 1...Kxh2!
    • 1.Rg3+?
      • 1...d5
        • 2.Qxd5#
      • 1...dxc6!
    • 1.Qc1+?
      • 1...Bg1
        • 2.Qxg1#
      • 1...Kxg2!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rg3#
      • 1...Bg1
        • 2.Rf2#
      • 1...Bg3
        • 2.Qf1#
      • 1...Bf4
        • 2.Qf1#
      • 1...Be5
        • 2.Qf1#
      • 1...Bd6
        • 2.Qf1#
      • 1...Bc7
        • 2.Qf1#
      • 1...Bb8
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK,XB(b)
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB(D),XP(c)
      • Refutation
        • P(c);XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR1(D),XB(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+R(B)
    • Vars
      • B(b);SBLOCK::QAB(D)+R(B)
      • B(b);N_GUARD::QAR2(D)
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