MESON Chess Problem Database

Problem Display
PID: 151484 (B1KN1R2/3Rp3/8/2p1k2r/5q2/1P4Q1/1r2p3/1bb5 w - - 0 1)

Ravizza, A

The Referee, 1927

(First published on Sun Jul 24 1927)

B1KN1R2/3Rp3/8/2p1k2r/5q2/1P4Q1/1r2p3/1bb5

#2

7 + 9

5454 Near Snap 2014
15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Qxf4#
    • 1...Be4
      • 2.Qc3#
    • 1...Bf5
      • 2.Qg7#
  • Tries
    • 1.Bh1?
      • threat
        • 2.Rd5#
      • 1...Rd2
        • 2.Qxf4#
      • 1...Be4
        • 2.Qc3#
      • 1...Bf5
        • 2.Qg7#
      • 1...e6
        • 2.Sc6#
      • 1...Rxh1!
    • 1.Bf3?
      • threat
        • 2.Rd5#
      • 1...Rd2
        • 2.Qxf4#
      • 1...Bf5
        • 2.Qg7#
      • 1...e6
        • 2.Sc6#
      • 1...Be4!
    • 1.Bd5?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Sc6#
      • 1...Rh6!
    • 1.Rxe7+?
      • 1...Kd6
        • 2.Re6#
      • 1...Kd4!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Rd5#
      • 1...Rd2
        • 2.Qxf4#
      • 1...Be4
        • 2.Qc3#
      • 1...Bf5
        • 2.Qg7#
      • 1...e6
        • 2.Sc6#

Anticipated by 40341(1918)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);S_CUTB(b)::QAB1(B),XQ(e)
    • B(a);::QAB(B)
    • B(a);P_PINR(C)::QAB(B)
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(C)
      • Vars
        • R(c);S_CUTB(b)::QAB1(B),XQ(e)
        • B(a);::QAB(B)
        • B(a);P_PINR(C)::QAB(B)
        • P(i);SBLOCK::S(F)
      • Refutation
        • R(h);XB(D)
    • Try
      • B(D);
      • Threat
        • R1(C)
      • Vars
        • R(c);S_CUTB(b)::QAB1(B),XQ(e)
        • B(a);P_PINR(C)::QAB(B)
        • P(i);SBLOCK::S(F)
      • Refutation
        • B(a);
    • Try
      • B(D);
      • Threat
        • S(F)
      • Vars
        • K(g);N_SPINQ(e),S_FLIGHT::S(F)
      • Refutation
        • R(h);
    • Try
      • R(C);CHECK,XP(i)
      • Vars
        • K(g);S_FLIGHT::R1(C)
      • Refutation
        • K(g);N_SPINQ(e),S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • R1(C)
    • Vars
      • R(c);S_CUTB(b)::QAB1(B),XQ(e)
      • B(a);::QAB(B)
      • B(a);P_PINR(C)::QAB(B)
      • P(i);SBLOCK::S(F)
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