MESON Chess Problem Database

Problem Display
PID: 267330 (3r3B/2Npb2b/pp3p2/rp6/n2k1P2/1PRp4/1P1K2B1/N1n1R3 w - - 0 1)

Pemberton, JE

Sunday Referee, 1938

(First published on Sun Sep 18 1938)

3r3B/2Npb2b/pp3p2/rp6/n2k1P2/1PRp4/1P1K2B1/N1n1R3

#2

10 + 13

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Bxf6#
    • 1...Bb4
      • 2.Bxf6#
    • 1...Bc5
      • 2.Bxf6#
    • 1...Bf8
      • 2.Bxf6#
    • 1...Be4
      • 2.Rxe4#
    • 1...Bg8
      • 2.Re4#
    • 1...Sxb3+
      • 2.Sxb3#
    • 1...b4
      • 2.Rc4#
    • 1...d5
      • 2.Se6#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.Sxb5+?
      • 1...Rxb5
        • 2.Rc4#
      • 1...axb5!
    • 1.Rxe7?
      • threat
        • 2.Bxf6#
      • 1...Sxb3+
        • 2.Sxb3#
      • 1...Rxh8
        • 2.Rxd7#
      • 1...Rf8
        • 2.Rxd7#
      • 1...b4
        • 2.Rc4#
      • 1...Sxc3!
  • Keys
    • 1.Re5!
      • threat
        • 2.Rd5#
      • 1...Sxb3+
        • 2.Sxb3#
      • 1...Sxc3
        • 2.bxc3#
      • 1...fxe5
        • 2.Bxe5#
      • 1...Be4
        • 2.Rxe4#
      • 1...Bg8
        • 2.Re4#
      • 1...b4
        • 2.Rc4#
      • 1...d5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(k);N_GUARD::B(J),XP(i)
    • B(k);N_GUARD,P_PINR(G)::B(J),XP(i)
    • B(l);N_GUARD::R1(B),XB(l)
    • B(l);N_GUARD::R1(B)
    • S(a);CHECK,XP(F)::S(A),XS(a)
    • P(f);N_GUARD::R1(G)
    • P(j);N_GUARD::S(I)
  • Tries
    • Try
      • S(I);CHECK,XP(f)
      • Vars
        • R(e);XS(I)::R1(G)
      • Refutation
        • P(g);XS(I)
    • Try
      • R(B);XB(k)
      • Threat
        • B(J),XP(i)
      • Vars
        • S(a);CHECK,XP(F)::S(A),XS(a)
        • R(m);N_GUARD,N_SPINP(i),XB(J)::R(B),XP(j)
        • R(m);N_GUARD::R(B),XP(j)
        • P(f);N_GUARD::R1(G)
      • Refutation
        • S(c);XR(G)
  • Actual
    • R(B);N_PINP(i)
    • Threat
      • R1(B)
    • Vars
      • S(a);CHECK,XP(F)::S(A),XS(a)
      • S(c);OGATE,XR(G)::P(C),XS(c)
      • P(i);OGATE,P_SPINP(i),XR(B)::B(J),XP(i)
      • B(l);N_GUARD::R1(B),XB(l)
      • B(l);N_GUARD::R1(B)
      • P(f);N_GUARD::R1(G)
      • P(j);N_GUARD::S(I)
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