MESON Chess Problem Database

Problem Display
PID: 73230 (q1b1k3/3Rbp2/2N2p1P/1P3Q2/p6K/8/8/8 w - - 0 1)

Witte, Bernardus Stephanus

Tijdschrift vd KNSB, 1942

q1b1k3/3Rbp2/2N2p1P/1P3Q2/p6K/8/8/8

#2

6 + 7

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Rd8#
    • 1...Bb4
      • 2.Rd8#
    • 1...Bc5
      • 2.Rd8#
    • 1...Bd6
      • 2.Rd8#
    • 1...Bd8
      • 2.Rxd8#
    • 1...Bf8
      • 2.Rd8#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Rd8#
        • 2.Qxe7#
      • 1...f5+
        • 2.Qxe7#
      • 1...Kxd7
        • 2.Qxe7#
      • 1...Qxc6
        • 2.Qxe7#
      • 1...Bxd7
        • 2.Qxe7#
      • 1...Qa5
        • 2.Qxe7#
      • 1...Ba6
        • 2.Qxe7#
      • 1...Bb7
        • 2.Qxe7#
      • 1...Kf8!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxe7#
      • 1...Kxd7
        • 2.Qxe7#
      • 1...Kf8
        • 2.Rd8#
      • 1...Bxc5
        • 2.Rd8#
      • 1...Bd6
        • 2.Rd8#
      • 1...Bd8
        • 2.Rxd8#
      • 1...Bf8
        • 2.Rd8#

Anticipated by 2179(0000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD::R1(F)
    • B(c);N_GUARD::R1(F),XB(c)
    • B(c);N_GUARD,SBLOCK::R1(F)
  • Tries
    • Try
      • Q(C);P_PINB(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);CHECK::QAR1(C),XB(c)
        • K(g);N_SPINB(c),S_FLIGHT,XR(F)::QAR1(C),XB(c)
        • Q(e);XS(D)::QAR1(C),XB(c)
        • B(f);XR(F)::QAR1(C),XB(c)
        • Q(e);::QAR1(C),XB(c)
        • B(f);::QAR1(C),XB(c)
      • Refutation
        • K(g);N_SPINB(c),P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XB(c)
    • Vars
      • K(g);S_FLIGHT,XR(F)::QAR1(C),XB(c)
      • K(g);P-FLIGHT,P_SPINB(c)::R(F)
      • B(c);N_GUARD,XQ(C)::R1(F)
      • B(c);N_GUARD::R1(F)
      • B(c);N_GUARD::R1(F),XB(c)
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