MESON Chess Problem Database

Problem Display
PID: 154920 (8/8/4p3/2p1B1p1/K1k3P1/2N1r3/2R1PQ2/8 w - - 0 1)

Bohringer, Wolf Willi

Heilbronner Stimme, 2000

8/8/4p3/2p1B1p1/K1k3P1/2N1r3/2R1PQ2/8

#2

7 + 5

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Qxe2#
  • Tries
    • 1.Sd1+?
      • 1...Rc3
        • 2.Se3#
      • 1...Kd5!
    • 1.Se4+?
      • 1...Rc3
        • 2.Qxc5#
      • 1...Kd5!
    • 1.Sd5+?
      • 1...Rc3
        • 2.Se3#
        • 2.Sb6#
      • 1...Kxd5!
    • 1.Qf3?
      • 1...Rxe2
        • 2.Sxe2#
        • 2.Qxe2#
      • 1...Rxc3
        • 2.Rxc3#
        • 2.Qe4#
        • 2.Qd3#
      • 1...Rxe5
        • 2.Sb5#
        • 2.Qd3#
      • 1...Rd3
        • 2.Qxd3#
        • 2.exd3#
      • 1...Re4
        • 2.Qxe4#
        • 2.Qd3#
      • 1...Rxf3!
    • 1.Qf4+?
      • 1...Re4
        • 2.Qxe4#
      • 1...gxf4!
  • Keys
    • 1.Qf1!
      • 1...Rxe2
        • 2.Qxe2#
      • 1...Rxc3
        • 2.e4#
      • 1...Rxe5
        • 2.e3#
      • 1...Rd3
        • 2.exd3#
      • 1...Rf3
        • 2.exf3#
      • 1...Rg3
        • 2.e3#
      • 1...Rh3
        • 2.e3#
      • 1...Re4
        • 2.e3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,XP(B)::QAB(C),XR(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(a);P_SPINR(a)::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • R(a);OGATE,P_SPINR(a)::QAR1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(D)
    • Try
      • Q(C);
      • Refutation
        • R(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAR2(C),XR(a)
      • Refutation
        • P(d);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • R(a);OGATE,P_SPINR(a),XP(B)::QAB(C),XR(a)
      • R(a);OGATE,P_SPINR(a),XS(D)::QAB(C)+P(B)
      • R(a);OGATE,XB(G)::QAB(C)+P(B)
      • R(a);OGATE::P(B),XR(a)
      • R(a);OGATE::QAB(C)+P(B),XR(a)
      • R(a);OGATE::QAB(C)+P(B)
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