MESON Chess Problem Database

Problem Display
PID: 91455 (8/2p5/2K3p1/6p1/2N3P1/QN1kB3/8/2R5 w - - 0 1)

Swane, Jan Arnold Willem

Probleemblad, 1963

8/2p5/2K3p1/6p1/2N3P1/QN1kB3/8/2R5

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Sd4#
    • 1...Ke4
      • 2.Sbd2#
  • Tries
    • 1.Kc5?
      • 1...Ke2
        • 2.Sd4#
      • 1...Ke4
        • 2.Sbd2#
      • 1...c6!
    • 1.Kd5?
      • threat
        • 2.Sd4#
      • 1...Ke2
        • 2.Sd4#
      • 1...c6+!
    • 1.Kxc7?
      • 1...Ke2
        • 2.Sd4#
      • 1...Ke4!
    • 1.Scd2?
      • threat
        • 2.Sd4#
      • 1...Ke2
        • 2.Sd4#
      • 1...Kxe3!
    • 1.Bg1?
      • 1...Ke2
        • 2.Sd4#
      • 1...Ke4!
    • 1.Ra1?
      • 1...Kc2
        • 2.Sd4#
      • 1...Ke2
        • 2.Sd4#
      • 1...Kxc4
        • 2.Sd2#
        • 2.Sa5#
      • 1...Ke4
        • 2.Sbd2#
      • 1...Kc3!
    • 1.Re1?
      • 1...Kc2
        • 2.Sa1#
        • 2.Sd4#
      • 1...Kxc4
        • 2.Sd2#
        • 2.Sa5#
      • 1...Ke4
        • 2.Sbd2#
      • 1...Kc3!
    • 1.Rg1?
      • 1...Kc2
        • 2.Sa1#
        • 2.Sd4#
      • 1...Ke2
        • 2.Sd4#
      • 1...Kxc4
        • 2.Sd2#
        • 2.Sa5#
      • 1...Ke4
        • 2.Sbd2#
      • 1...Kc3!
    • 1.Rh1?
      • 1...Kc2
        • 2.Sa1#
        • 2.Sd4#
      • 1...Ke2
        • 2.Sd4#
      • 1...Kxc4
        • 2.Sd2#
        • 2.Sa5#
      • 1...Ke4
        • 2.Sbd2#
      • 1...Kc3!
    • 1.Rc2?
      • 1...Ke4
        • 2.Sbd2#
      • 1...Kxc2!
    • 1.Qc5?
      • 1...Ke4
        • 2.Qd5#
      • 1...Ke2!
    • 1.Qd6+?
      • 1...Ke2
        • 2.Qd1#
      • 1...Ke4
        • 2.Sbd2#
        • 2.Qd5#
      • 1...cxd6!
    • 1.Qa5?
      • 1...Ke4
        • 2.Qd5#
      • 1...Ke2!
  • Keys
    • 1.Qf8!
      • 1...Ke2
        • 2.Qf1#
      • 1...Ke4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(C)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • P(d);
    • Try
      • K(G);S_FLIGHT
      • Threat
        • QAR(B)+S(C)
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • P(d);CHECK
    • Try
      • K(G);P-FLIGHT,XP(d)
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR(B)+S(C)
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • P(d);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::S(C)
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