MESON Chess Problem Database

Problem Display
PID: 208462 (8/8/1p6/kp6/1R1N4/8/1K6/1Q6 w - - 0 1)

Klemensiewicz, Josef

Deutsche Schachblatter, 1926

8/8/1p6/kp6/1R1N4/8/1K6/1Q6

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3+?
      • 1...Kxb4
        • 2.Qe4#
      • 1...Ka6!
    • 1.Rb3?
      • threat
        • 2.Qa2#
        • 2.Qa1#
      • 1...Ka4
        • 2.Qa2#
        • 2.Qa1#
      • 1...Ka6!
    • 1.Rxb5+?
      • 1...Ka4
        • 2.Qa2#
        • 2.Qc2#
        • 2.Qa1#
        • 2.Qd1#
      • 1...Ka6!
    • 1.Qc2?
      • 1...Kxb4
        • 2.Sc6#
      • 1...Ka6!
    • 1.Qd3?
      • threat
        • 2.Qxb5#
        • 2.Qa3#
      • 1...Kxb4
        • 2.Qxb5#
      • 1...Ka6!
    • 1.Qf5?
      • threat
        • 2.Qxb5#
      • 1...Kxb4
        • 2.Qxb5#
      • 1...Ka6!
    • 1.Qf1?
      • threat
        • 2.Qxb5#
      • 1...Kxb4
        • 2.Qxb5#
      • 1...Ka6!
    • 1.Qh1?
      • 1...Ka6
        • 2.Qa8#
      • 1...Kxb4!
  • Keys
    • 1.Qe4!
      • 1...Kxb4
        • 2.Sb3#
      • 1...Ka6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(C)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT,XR(C)::S(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT,XR(C)::QAR1(A),XP(b)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XR(C)::QAR1(A),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(a);S_FLIGHT,XR(C)::QAR1(A),XP(b)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAR(A)+S(D)
      • K(a);P-FLIGHT::QAR2(A)
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