MESON Chess Problem Database

Problem Display
PID: 70449 (2r5/N2b3B/1P2P2K/Qp4R1/2pk4/1q4R1/8/1n1nN3 w - - 0 1)

Warner, JH

Chess, 1951

2r5/N2b3B/1P2P2K/Qp4R1/2pk4/1q4R1/8/1n1nN3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Sxc2#
    • 1...Qa3
      • 2.Sc2#
    • 1...Qe3
      • 2.Sc2#
    • 1...Qf3
      • 2.Sc2#
    • 1...Qxg3
      • 2.Sc2#
    • 1...Qb4
      • 2.Sc2#
    • 1...Se3
      • 2.Sf3#
    • 1...b4
      • 2.R5g4#
      • 2.Rd5#
      • 2.Qd5#
      • 2.Qe5#
  • Tries
    • 1.Sxb5+?
      • 1...Qxb5
        • 2.Sc2#
      • 1...Bxb5!
    • 1.Qd2+?
      • 1...Qd3
        • 2.Sc2#
        • 2.Sf3#
        • 2.R3g4#
      • 1...Sxd2!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qd6#
      • 1...Qxg3
        • 2.Sc2#
      • 1...Qxb4
        • 2.Sc2#
      • 1...Bxe6
        • 2.Sxb5#
      • 1...Qf3
        • 2.Sc2#
      • 1...Qa3
        • 2.Sc2#
      • 1...Qd3
        • 2.Rxd3#
      • 1...Qe3
        • 2.Sc2#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rc6
        • 2.Sxb5#
      • 1...Bc6
        • 2.Qc5#
      • 1...Sbc3
        • 2.Rd3#
      • 1...Sdc3
        • 2.Rd3#
      • 1...Se3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD::S(A),XQ(c)
    • Q(c);N_GUARD::S(A)
    • Q(c);N_GUARD,P_PINR(D)::S(A)
    • Q(c);N_GUARD,XR(B)::S(A)
    • S(b);SBLOCK,S_CUTQ(c)::S(A)
  • Tries
    • Try
      • S(H);CHECK,XP(f)
      • Vars
        • Q(c);XS(H)::S(A)
      • Refutation
        • B(g);XS(H)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);P_PINP(d)
    • Threat
      • QAR2(C)
    • Vars
      • Q(c);N_GUARD,XR(B)::S(A)
      • Q(c);N_GUARD,N_SPINP(d),XQ(C)::S(A)
      • B(g);N_GUARD,XP(F)::S(H),XP(f)
      • Q(c);N_GUARD::S(A)
      • Q(c);N_GUARD::R1(B),XQ(c)
      • Q(c);N_GUARD,P_PINR(D)::S(A)
      • R(h);N_GUARD::QAB1(C),XR(h)
      • R(h);P_PINP(F),S_CUTB(g)::S(H),XP(f)
      • B(g);S_CUTR(h)::QAB1(C)
      • S(a);S_CUTQ(c)::R1(B)
      • S(b);S_CUTQ(c)::R1(B)
      • S(b);SBLOCK,S_CUTQ(c)::S(A)
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