MESON Chess Problem Database

Problem Display
PID: 272032 (6rB/3b1N2/2p2p2/2R2P1p/3KPk1b/1Q2p2p/4B1nP/6R1 w - - 0 1)

Nutt, John

Sunday Referee, 1934

(First published on Sun Mar 11 1934)

6rB/3b1N2/2p2p2/2R2P1p/3KPk1b/1Q2p2p/4B1nP/6R1

#2

10 + 10

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Qb8#
    • 1...Rg4
      • 2.Qb8#
    • 1...Rg5
      • 2.Qb8#
    • 1...Rg6
      • 2.Qb8#
    • 1...Rg7
      • 2.Qb8#
    • 1...Rb8
      • 2.Qxb8#
    • 1...Bg5
      • 2.Rf1#
    • 1...Bxf5
      • 2.Rxf5#
    • 1...Bc8
      • 2.Qb8#
    • 1...Be8
      • 2.Qb8#
    • 1...Se1
      • 2.Qxe3#
  • Tries
    • 1.Rxg2?
      • threat
        • 2.Qxe3#
      • 1...Rg3
        • 2.Qb8#
      • 1...Bf2!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sxh3#
      • 1...Kxg5
        • 2.Qxe3#
      • 1...Rxg5
        • 2.Qb8#
      • 1...Bxg5
        • 2.Rf1#
      • 1...Bxf5
        • 2.Rxf5#
      • 1...fxg5
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::QAB(D)
    • R(j);N_GUARD::QAB(D),XR(j)
    • B(e);N_GUARD::R(A)
    • B(i);OGATE,XP(H)::R1(G),XB(i)
    • B(i);S_CUTR(j)::QAB(D)
    • S(a);N_GUARD::QAB1(D),XP(b)
  • Tries
    • Try
      • R(A);XS(a)
      • Threat
        • QAB1(D),XP(b)
      • Vars
        • R(j);N_GUARD::QAB(D)
      • Refutation
        • B(e);
  • Actual
    • S(I);
    • Threat
      • S(I),XP(c)
    • Vars
      • K(d);P_SPINS(a),S_FLIGHT,XS(I)::QAB(D),XP(b)
      • R(j);N_GUARD,SBLOCK,XS(I)::QAB(D)
      • B(e);N_GUARD,SBLOCK,XS(I)::R(A)
      • B(i);OGATE,XP(H)::R1(G),XB(i)
      • P(h);OGATE,SBLOCK,XS(I)::B(J)
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