MESON Chess Problem Database

Problem Display
PID: 218593 (4n3/7Q/2p1p2P/p4N2/N1B1k1Pp/1n5K/4rR2/B1R5 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

Bettmann, Jacob

Newark Sunday Call, 1882

4n3/7Q/2p1p2P/p4N2/N1B1k1Pp/1n5K/4rR2/B1R5

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Rxe1#
    • 1...Re3+
      • 2.Sg3#
    • 1...Sxc1
      • 2.Sc5#
    • 1...Sd2
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...c5
      • 2.Qb7#
    • 1...exf5
      • 2.Qe7#
    • 1...e5
      • 2.Sc3#
  • Tries
    • 1.Bd3+?
      • 1...Kd5
        • 2.Sb6#
      • 1...Kxd3!
    • 1.Rxe2+?
      • 1...Kf3
        • 2.Rf1#
      • 1...Kf4!
  • Keys
    • 1.Qa7!
      • 1...Re3+
        • 2.Qxe3#
      • 1...Rxf2
        • 2.Qe3#
      • 1...Sxa1
        • 2.Qd4#
      • 1...Sxc1
        • 2.Sc5#
        • 2.Qd4#
      • 1...exf5
        • 2.Qe7#
      • 1...Rb2
        • 2.Qe3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Re1
        • 2.Rxe1#
      • 1...Ra2
        • 2.Qe3#
      • 1...Rc2
        • 2.Qe3#
      • 1...Rd2
        • 2.Qe3#
      • 1...Sd2
        • 2.Sc5#
        • 2.Qd4#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sc7
        • 2.Sd6#
      • 1...Sg7
        • 2.Sd6#
      • 1...c5
        • 2.Qb7#
        • 2.Qa8#
      • 1...e5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 3
  • Sets
    • R(a);OGATEB::R(B),XR(a)
    • R(a);CHECK,SBLOCK::QAB(J)+S(H),DCHECK
    • S(b);N_GUARD,XR(B)::S(E)
    • S(b);N_GUARD::S(E)
    • S(b);N_GUARD::S(E),XS(b)
    • P(f);OGATEB::QAB(J)
    • P(g);OGATEB,P_SPINP(g),XS(H)::QAR(J)
    • P(g);SBLOCK::S(E)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • K(c);S_FLIGHT,XB(F)
    • Try
      • R(C);CHECK,XR(a)
      • Vars
        • K(c);S_FLIGHT::R(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(J);
    • Vars
      • R(a);CHECK,N_GUARD::QAR1(J),XR(a)
      • R(a);N_GUARD,XR(C)::QAR1(J)
      • S(b);N_GUARD,XB(A)::QAR1(J)
      • P(g);OGATEB,XS(H)::QAR(J)
      • R(a);N_GUARD::QAR1(J)
      • S(b);N_GUARD::QAR1(J),XS(b)
      • R(a);OGATEB::R(B),XR(a)
      • S(b);N_GUARD::S(E),XS(b)
      • S(h);N_GUARD::S(H),XS(h)
      • S(h);N_GUARD::S(H)
      • P(g);SBLOCK::S(E)
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Developed and maintained by Brian Stephenson.
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