MESON Chess Problem Database

Problem Display
PID: 267260 (6b1/p7/K6p/N2pp1N1/pB1k1nQ1/r1p3Rr/pP1nPP2/7B w - - 0 1)

Nutt, John

Sunday Referee, 1938

(First published on Sun Jul 10 1938)

6b1/p7/K6p/N2pp1N1/pB1k1nQ1/r1p3Rr/pP1nPP2/7B

#2

10 + 13

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh1
      • 2.Rd3#
    • 1...Rh2
      • 2.Rd3#
    • 1...Rh4
      • 2.Rd3#
    • 1...Rh5
      • 2.Rd3#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bh7
      • 2.Se6#
    • 1...Sb3
      • 2.bxc3#
    • 1...Sc4
      • 2.Sc6#
    • 1...Se4
      • 2.Sf3#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Sc6#
        • 2.Bc5#
      • 1...e4
        • 2.Sc6#
      • 1...Rb3
        • 2.Sc6#
      • 1...Sb3
        • 2.Sc6#
        • 2.Bxc3#
        • 2.bxc3#
      • 1...Se4
        • 2.Sc6#
        • 2.Sf3#
      • 1...a6+!
    • 1.Qxf4+?
      • 1...Se4
        • 2.Sf3#
        • 2.Qe3#
      • 1...e4
        • 2.Qf6#
      • 1...exf4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxa7#
      • 1...e4
        • 2.Qg7#
      • 1...Sb3
        • 2.bxc3#
      • 1...Sc4
        • 2.Sc6#
      • 1...Se4
        • 2.Sf3#
      • 1...Sd3
        • 2.e3#
      • 1...Se6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD,XB(A)::R1(E)
    • R(e);N_GUARD::R1(E)
    • B(m);N_GUARD::S(I),XB(m)
    • B(m);N_GUARD::S(I)
    • S(b);S_CUTR(c)::P(B),XP(d)
    • S(b);SBLOCK::S(H)
    • S(b);N_GUARD,N_SPINS(h),SBLOCK::S(I)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(j);N_SPINS(h)::S(H)
        • R(c);P_PINB(F)::S(H)
      • Refutation
        • P(l);CHECK
    • Try
      • Q(G);CHECK,XS(h)
      • Vars
        • P(j);OGATEB,P_SPINP(j)::QAB(G)
      • Refutation
        • P(j);XQ(G)
  • Actual
    • Q(G);N_PINS(h),P_PINP(i)
    • Threat
      • QAB(G),XP(l)
    • Vars
      • P(j);OGATEB::QAB(G)
      • S(b);S_CUTR(c)::P(B),XP(d)
      • S(b);SBLOCK::S(H)
      • S(b);N_GUARD,SBLOCK::S(I)
      • S(h);SBLOCK::P(C)
      • S(h);N_GUARD,S_CUTB(m)::QAR1(G),XP(i)
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