MESON Chess Problem Database

Problem Display
PID: 232933 (8/8/1K6/4R3/2k5/P1N5/1Q6/2r5 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2008

8/8/1K6/4R3/2k5/P1N5/1Q6/2r5

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qd2#
      • 1...Kd3!
    • 1.Rd5?
      • threat
        • 2.Qb4#
      • 1...Rxc3
        • 2.Qb5#
      • 1...Rb1!
    • 1.Qc2?
      • threat
        • 2.Re4#
      • 1...Rb1+
        • 2.Sb5#
      • 1...Kd4
        • 2.Re4#
      • 1...Rd1
        • 2.Se2#
        • 2.Sb5#
      • 1...Re1
        • 2.Se2#
        • 2.Sb5#
      • 1...Rxc2!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Se2#
      • 1...Kxc3!
  • Keys
    • 1.Sb5!
      • 1...Kd3
        • 2.Qe2#
      • 1...Rb1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Ra1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Rd1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Re1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Rf1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Rg1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Rh1
        • 2.Qc3#
        • 2.Qc2#
      • 1...Rc2
        • 2.Qxc2#
      • 1...Rc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);SBLOCK,XS(C)::QAB1(A)
      • Refutation
        • R(a);P_PINQ(A)
    • Try
      • Q(A);
      • Threat
        • R(D)
      • Vars
        • R(a);CHECK,N_GUARD::QAR(A)+S(C)
        • K(b);P-FLIGHT::R1(D)
      • Refutation
        • R(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::S(C)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • R(a);N_GUARD::QAR2(A),XR(a)
      • R(a);N_GUARD::QAR1(A),XR(a)
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