MESON Chess Problem Database

Problem Display
PID: 204388 (7R/3NpNk1/4Pq2/3RB2P/1K6/8/8/8 w - - 0 1)

Philipowitz, Martin

Funkschach, 1925

7R/3NpNk1/4Pq2/3RB2P/1K6/8/8/8

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bb2?
      • threat
        • 2.Rg5#
      • 1...Qc3+
        • 2.Bxc3#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qe5
        • 2.Bxe5#
      • 1...Qxb2+!
    • 1.Bc3?
      • threat
        • 2.Rg5#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qe5
        • 2.Bxe5#
      • 1...Qxc3+!
    • 1.Bd4?
      • threat
        • 2.Rg5#
      • 1...Qe5
        • 2.Bxe5#
      • 1...Qxd4+!
    • 1.Rd6?
      • 1...exd6
        • 2.Bxf6#
      • 1...Qxe5!
  • Keys
    • 1.Ba1!
      • threat
        • 2.Rg5#
      • 1...Qb2+
        • 2.Bxb2#
      • 1...Qc3+
        • 2.Bxc3#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qe5
        • 2.Bxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • R(B)
      • Vars
        • Q(a);CHECK,OGATEB::B(C),XQ(a)
        • Q(a);OGATEB::B(C),XQ(a)
      • Refutation
        • Q(a);CHECK,N_SPINQ(a),XB(C)
    • Try
      • B(C);
      • Threat
        • R(B)
      • Vars
        • Q(a);CHECK,OGATEB::B(C),XQ(a)
        • Q(a);OGATEB::B(C),XQ(a)
      • Refutation
        • Q(a);CHECK,N_SPINQ(a),XB(C)
    • Try
      • B(C);
      • Threat
        • R(B)
      • Vars
        • Q(a);OGATEB::B(C),XQ(a)
      • Refutation
        • Q(a);CHECK,N_SPINQ(a),XB(C)
    • Try
      • R(B);
      • Vars
        • P(b);N_GUARD,XR(B)::B(C),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XB(C)
  • Actual
    • B(C);
    • Threat
      • R(B)
    • Vars
      • Q(a);CHECK,OGATEB::B(C),XQ(a)
      • Q(a);OGATEB::B(C),XQ(a)
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