MESON Chess Problem Database

Problem Display
PID: 146043 (3K4/8/3Bp1N1/1Q4p1/8/2pR1n2/4kr2/nB1rbq2 w - - 0 1)

Weiss, Berthold

Good Companions (January), 1918

3K4/8/3Bp1N1/1Q4p1/8/2pR1n2/4kr2/nB1rbq2

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxd3#
    • 1...Sg1
      • 2.Qe5#
    • 1...Sh2
      • 2.Qe5#
    • 1...Sd4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...g4
      • 2.Sf4#
  • Tries
    • 1.Rxc3+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Kd2!
    • 1.Rd4+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Ke3!
    • 1.Rd5+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Ke3!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Rd2#
      • 1...Rxd3+
        • 2.Qxd3#
      • 1...gxf4
        • 2.Sxf4#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Bd2
        • 2.Re3#
      • 1...Sg1
        • 2.Qe5#
      • 1...Sd2
        • 2.Re3#
      • 1...Sh2
        • 2.Qe5#
      • 1...Sd4
        • 2.Qe5#
      • 1...Sh4
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,P_PINB(D),P_SPINR(b),XR(B)::QAB1(C),XR(b)
    • S(h);N_GUARD::QAR(C)
    • S(h);N_GUARD::QAR(C),XS(h)
    • P(i);N_GUARD::S(E)
  • Tries
    • Try
      • R(B);CHECK,P_SPINB(D),XP(g)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • K(e);N_PINB(D),P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • B(D);P_SPINR(B)
    • Threat
      • QAB(C)+R(B),DCHECK
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XR(B)::QAB1(C),XR(b)
      • P(i);XB(D)::S(E),XP(i)
      • R(b);::QAB(C)+R(B),DCHECK,XR(b)
      • B(c);N_PINR(B),SBLOCK::QAB(C)+R(B),DCHECK
      • S(h);N_GUARD::QAR(C)
      • S(h);N_PINR(B),SBLOCK::QAB(C)+R(B),DCHECK
      • S(h);N_GUARD,N_PINR(B)::QAR(C)
      • S(h);N_GUARD::QAR(C),XS(h)
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