MESON Chess Problem Database

Problem Display
PID: 141231 (8/8/8/7Q/3pk3/3R4/2KP3P/8 w - - 0 1)

Matthaus, Hans Georg

Deutsche Schachzeitung, 1987

8/8/8/7Q/3pk3/3R4/2KP3P/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Rxd4#
  • Tries
    • 1.Kb1?
      • 1...Kf4
        • 2.Rxd4#
      • 1...Kxd3!
    • 1.Kc1?
      • 1...Kf4
        • 2.Rxd4#
      • 1...Kxd3!
    • 1.Kb2?
      • 1...Kf4
        • 2.Rxd4#
      • 1...Kxd3!
    • 1.Kb3?
      • 1...Kf4
        • 2.Rxd4#
      • 1...Kxd3!
    • 1.Rh3?
      • threat
        • 2.Rh4#
      • 1...Kf4
        • 2.Rh4#
      • 1...d3+!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Rxd4#
      • 1...Kxd5!
  • Keys
    • 1.Kd1!
      • 1...Kxd3
        • 2.Qe2#
      • 1...Kf4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(D),XP(a)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • K(b);P-FLIGHT::R(D)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::R(D),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XQ(E)
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(b);S_FLIGHT,XR(D)::QAB1(E)
      • K(b);P-FLIGHT::R(D),XP(a)
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