MESON Chess Problem Database

Problem Display
PID: 99981 (8/8/3KN3/3RPNRp/2p1k1pb/1nPp2p1/3Pn1P1/4Q3 w - - 0 1)

Rothler, Emil

Magyar Sakkvilag, 1924

8/8/3KN3/3RPNRp/2p1k1pb/1nPp2p1/3Pn1P1/4Q3

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg5
      • 2.Sxg3#
    • 1...Sa1
      • 2.Rd4#
    • 1...Sc1
      • 2.Rd4#
    • 1...Sxd2
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sa5
      • 2.Rd4#
    • 1...Sc5
      • 2.Rd4#
  • Tries
    • 1.Sxh4?
      • 1...Sa1
        • 2.Rd4#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sa5
        • 2.Rd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sxd2!
    • 1.Sc5+?
      • 1...Sxc5
        • 2.Rd4#
      • 1...Kf4!
    • 1.Rxh5?
      • 1...Sxd2
        • 2.Rd4#
      • 1...Bg5
        • 2.Sxg3#
      • 1...Bf6
        • 2.Sxg3#
      • 1...Bd8
        • 2.Sxg3#
      • 1...Sa1
        • 2.Rd4#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sa5
        • 2.Rd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Be7+!
    • 1.Qf2?
      • threat
        • 2.Qe3#
      • 1...Bxg5
        • 2.Sxg5#
      • 1...gxf2!
  • Keys
    • 1.Qf1!
      • 1...Bxg5
        • 2.Sxg5#
      • 1...Sxc3
        • 2.Qf4#
      • 1...Sxd2
        • 2.Sc5#
      • 1...Sec1
        • 2.Qf4#
      • 1...Sg1
        • 2.Qf4#
      • 1...Sed4
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sa1
        • 2.Sc5#
      • 1...Sbc1
        • 2.Sc5#
      • 1...Sbd4
        • 2.Sc5#
      • 1...Sa5
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD,XR(H)::S(G),XP(d)
    • S(b);N_GUARD::R1(E)
    • S(b);N_GUARD,XP(B)::R1(E)
    • S(b);N_GUARD::R1(E),XS(b)
  • Tries
    • Try
      • S(G);XB(h)
      • Vars
        • S(b);N_GUARD::R1(E)
        • S(b);N_GUARD::R1(E),XS(b)
      • Refutation
        • S(b);XP(B)
    • Try
      • S(J);CHECK
      • Vars
        • S(b);XS(J)::R1(E)
      • Refutation
        • K(f);N_SPINS(a),P-FLIGHT
    • Try
      • R(H);XP(i)
      • Vars
        • S(b);N_GUARD,XP(B)::R1(E)
        • B(h);N_GUARD::S(G),XP(d)
        • S(b);N_GUARD::R1(E)
        • S(b);N_GUARD::R1(E),XS(b)
      • Refutation
        • B(h);CHECK
    • Try
      • Q(A);N_PINS(a)
      • Threat
        • QAR1(A)
      • Vars
        • B(h);XR(H)::S(J),XB(h)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • Q(A);N_PINS(a)
    • Vars
      • B(h);XR(H)::S(J),XB(h)
      • S(a);N_GUARD,XP(D)::QAR1(A)
      • S(b);N_GUARD,XP(B)::S(J)
      • S(a);N_GUARD::QAR1(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(b);N_GUARD::S(J)
      • S(b);N_GUARD::S(J),XS(b)
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