MESON Chess Problem Database

Problem Display
PID: 165490 (4B3/2p5/1N6/kP4QR/2Rr4/P7/3P2p1/3K2B1 w - - 0 1)

Andersson, Gunnar

Tidskrift for Schack, 1943

4B3/2p5/1N6/kP4QR/2Rr4/P7/3P2p1/3K2B1

#2

10 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2+
      • 2.Qxd2#
    • 1...Rd3
      • 2.Ra4#
    • 1...Rd5
      • 2.Ra4#
    • 1...Rd6
      • 2.Ra4#
    • 1...Rd7
      • 2.Ra4#
    • 1...Rd8
      • 2.Ra4#
  • Keys
    • 1.Qd8!
      • 1...Rxd2+
        • 2.Qxd2#
      • 1...Kxb6
        • 2.Qxc7#
      • 1...Rxc4
        • 2.Qa8#
      • 1...Rxd8
        • 2.Ra4#
      • 1...cxb6
        • 2.Qa8#
      • 1...Rd3
        • 2.Ra4#
        • 2.Qa8#
      • 1...Re4
        • 2.Qa8#
      • 1...Rf4
        • 2.Qa8#
      • 1...Rg4
        • 2.Qa8#
      • 1...Rh4
        • 2.Qa8#
      • 1...Rd5
        • 2.Ra4#
        • 2.Qa8#
      • 1...Rd6
        • 2.Ra4#
        • 2.Qa8#
      • 1...Rd7
        • 2.Ra4#
        • 2.Qa8#
      • 1...c5
        • 2.Sd5#
      • 1...c6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(b);CHECK,OGATE,XP(C)::QAB(G),XR(b)
    • R(b);N_GUARD::R1(E)
  • Actual
    • Q(G);
    • Vars
      • R(b);CHECK,OGATE,XP(C)::QAB(G),XR(b)
      • K(c);OGATEB,P_SPINP(d),P_SPINR(b),S_FLIGHT,XS(I)::QAB1(G),XP(d)
      • R(b);N_PINP(C),XR(E)::QAR(G)
      • R(b);N_GUARD,XQ(G)::R1(E)
      • P(d);P_SPINP(d),SBLOCK,XS(I)::QAR(G)
      • R(b);N_PINP(C)::QAR(G)
      • P(d);::QAB(G)+S(I)
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