MESON Chess Problem Database

Problem Display
PID: 84215 (Q6R/8/8/8/1P6/Kp6/8/kr6 w - - 0 1)

Drazkowski, Krzysztof

Problemist Pribuzhya, 1990

Q6R/8/8/8/1P6/Kp6/8/kr6

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Rxh1#
      • 2.Qxh1#
    • 1...b2
      • 2.Kb3#
  • Tries
    • 1.Qh1?
      • 1...Rxh1
        • 2.Rxh1#
      • 1...Rc1
        • 2.Qxc1#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Re1
        • 2.Qxe1#
      • 1...Rf1
        • 2.Qxf1#
      • 1...Rg1
        • 2.Qxg1#
      • 1...b2!
    • 1.Qg2?
      • 1...Rc1
        • 2.Qb2#
      • 1...Rd1
        • 2.Qb2#
      • 1...Re1
        • 2.Qb2#
      • 1...Rf1
        • 2.Qxf1#
        • 2.Qb2#
      • 1...Rg1
        • 2.Qxg1#
        • 2.Qb2#
      • 1...Rh1
        • 2.Rxh1#
        • 2.Qxh1#
        • 2.Qb2#
      • 1...Rb2
        • 2.Qxb2#
      • 1...b2!
  • Keys
    • 1.Rh1!
      • 1...Rxh1
        • 2.Qxh1#
      • 1...Rc1
        • 2.Rxc1#
      • 1...Rd1
        • 2.Rxd1#
      • 1...Re1
        • 2.Rxe1#
      • 1...Rf1
        • 2.Rxf1#
      • 1...Rg1
        • 2.Rxg1#
      • 1...b2
        • 2.Kb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);::QAR(C)+K(A)
  • Tries
    • Try
      • Q(C);P_PINR(b)
      • Vars
        • R(b);N_SPINR(b),OGATE,XQ(C)::R(D),XR(b)
        • R(b);OGATEB::QAR2(C),XR(b)
        • R(b);OGATEB::QAR(C),XR(b)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • R(b);N_GUARD::QAB1(C)
        • R(b);N_GUARD::QAB1(C),XR(b)
      • Refutation
        • P(c);
  • Actual
    • R(D);P_PINR(b)
    • Vars
      • R(b);N_SPINR(b),OGATE,XR(D)::QAB1(C),XR(b)
      • R(b);OGATEB::R(D),XR(b)
      • P(c);::QAR(C)+K(A)
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