MESON Chess Problem Database

Problem Display
PID: 162138 (3rb3/1NR5/Q1n1p3/3kP3/1r4NR/1P1PbP2/2n1P3/1B4BK w - - 0 1)

Thomas, Georg

Nationaltidende, 1940

(First published on Sun Aug 11 1940)

3rb3/1NR5/Q1n1p3/3kP3/1r4NR/1P1PbP2/2n1P3/1B4BK

#2

13 + 8

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Qc4#
    • 1...Rc4
      • 2.Qxc4#
    • 1...Rd4
      • 2.Qb5#
    • 1...Rb6
      • 2.Qc4#
    • 1...Rxb7
      • 2.Qc4#
    • 1...Bd4
      • 2.e4#
    • 1...Sd4
      • 2.Rc5#
    • 1...Sxe5
      • 2.Sf6#
  • Tries
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Rxb5!
    • 1.Qxc6+?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qc5#
      • 1...Bxc6!
  • Keys
    • 1.d4!
      • threat
        • 2.Sf6#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Rxd4
        • 2.Qb5#
      • 1...Bxd4
        • 2.e4#
      • 1...S2xd4
        • 2.Be4#
      • 1...S6xd4
        • 2.Rc5#
      • 1...Bg5
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD,XP(E)::QAB1(K)
    • R(c);N_GUARD::QAB1(K),XR(c)
    • R(c);N_GUARD,SBLOCK,S_CUTB(b)::QAR2(K)
    • R(c);N_GUARD::QAB1(K)
    • R(c);N_GUARD,XS(L)::QAB1(K)
    • B(b);OGATE::P(D)
    • S(e);OGATE,SBLOCK::R1(M)
    • S(e);SBLOCK,XP(J)::S(H)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(b)::QAB1(K)
        • B(b);N_GUARD,P_SPINB(b)::QAR1(K),XB(b)
      • Refutation
        • R(c);XQ(K)
    • Try
      • Q(K);CHECK,XS(e)
      • Refutation
        • B(h);XQ(K)
  • Actual
    • P(F);
    • Threat
      • S(H)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINB(b),XP(F)::QAR1(K)
      • R(c);N_GUARD,SBLOCK,XP(F)::QAR2(K)
      • B(b);OGATE,XP(F)::P(D)
      • S(a);OGATE,SBLOCK,XP(F)::B(A)
      • S(e);OGATE,SBLOCK,XP(F)::R1(M)
      • B(b);OGATE::P(D)
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