MESON Chess Problem Database

Problem Display
PID: 206323 (3RB1K1/6N1/8/Q1Pr4/R1bk1P2/2p2p2/2P2P2/8 w - - 0 1)

Nische, N

Funkschach, 1925

3RB1K1/6N1/8/Q1Pr4/R1bk1P2/2p2p2/2P2P2/8

#2

10 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bc6?
      • 1...Rd6+
        • 2.Se6#
      • 1...Rd7+
        • 2.Se6#
      • 1...Ke4
        • 2.Rxc4#
      • 1...Rxd8+!
    • 1.Qb5?
      • threat
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Rd6+
        • 2.Qxc4#
      • 1...Rd7+
        • 2.Qxc4#
      • 1...Rxd8+
        • 2.Qxc4#
      • 1...Ke4!
    • 1.Qa6?
      • threat
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Rd6+
        • 2.Qxc4#
      • 1...Rd7+
        • 2.Qxc4#
      • 1...Rxd8+
        • 2.Qxc4#
      • 1...Kxc5
        • 2.Se6#
        • 2.Rxc4#
        • 2.Qa7#
      • 1...Ke4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxd5#
      • 1...Rd6+
        • 2.Se6#
      • 1...Rd7+
        • 2.Se6#
      • 1...Rxd8+
        • 2.Se6#
      • 1...Ke4
        • 2.Rxc4#
      • 1...Kxc5
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(I);
      • Vars
        • R(e);CHECK::S(G)
        • K(d);P-FLIGHT::R(C),XB(c)
      • Refutation
        • R(e);CHECK,N_SPINR(e),XR(H)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);CHECK::QAR1(E),XB(c)
        • R(e);CHECK,N_SPINR(e),P_PINB(I),XR(H)::QAR1(E),XB(c)
      • Refutation
        • K(d);N_SPINR(e),P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);CHECK::QAR1(E),XB(c)
        • R(e);CHECK,N_SPINR(e),P_PINB(I),XR(H)::QAR1(E),XB(c)
      • Refutation
        • K(d);N_SPINR(e),P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XR(e)
    • Vars
      • R(e);CHECK::S(G)
      • R(e);CHECK,N_SPINR(e),P_PINB(I),XR(H)::S(G)
      • K(d);P-FLIGHT::R(C),XB(c)
      • K(d);N_SPINB(c),N_SPINR(e),OGATEB,S_FLIGHT,XP(F)::QAB(E)
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