MESON Chess Problem Database

Problem Display
PID: 93251 (B6B/7P/2rNP1pr/1p1k4/1p2N1Kp/3bRQ2/8/2nR4 w - - 0 1)

Madsen, Arthur Valdemar

Skakbladet, 1936

B6B/7P/2rNP1pr/1p1k4/1p2N1Kp/3bRQ2/8/2nR4

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qf7#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Sf2+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kxd6!
    • 1.Sc3+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kxd6!
    • 1.Sg3+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kxd6!
    • 1.Sc5+?
      • 1...Kxc5
        • 2.Qxc6#
      • 1...Kxd6!
    • 1.Sg5+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kxd6!
    • 1.Bxc6+?
      • 1...Kxe6
        • 2.Qf6#
        • 2.Qf7#
      • 1...Kxc6!
    • 1.Rdxd3+?
      • 1...Kxe6
        • 2.Sc5#
        • 2.Sf6#
        • 2.Qf7#
      • 1...Sxd3!
    • 1.Rexd3+?
      • 1...Kxe6
        • 2.Qf7#
      • 1...Sxd3!
    • 1.Qf4?
      • threat
        • 2.Qe5#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Rh5!
    • 1.Qf7?
      • threat
        • 2.e7#
      • 1...g5
        • 2.Qf5#
      • 1...Rxh7!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sed6#
      • 1...Kc4
        • 2.Sd2#
      • 1...Kxe6
        • 2.Sec5#
      • 1...Rxe6
        • 2.Sbd6#
      • 1...Rd6
        • 2.Sexd6#
      • 1...Rc4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINB(b),N_SPINR(g),OGATEB,S_FLIGHT,XP(G)::QAB1(C)
    • P(h);N_GUARD::QAR2(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_SPINB(b),N_SPINR(g),OGATE,P-FLIGHT::QAR1(C),XR(g)
      • Refutation
        • K(f);N_SPINR(g),P-FLIGHT,XS(F)
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_SPINB(b),N_SPINR(g),OGATE,P-FLIGHT::QAR1(C),XR(g)
      • Refutation
        • K(f);N_SPINR(g),P-FLIGHT,XS(F)
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_SPINB(b),N_SPINR(g),OGATE,P-FLIGHT::QAR1(C),XR(g)
      • Refutation
        • K(f);N_SPINR(g),P-FLIGHT,XS(F)
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_SPINB(b),N_SPINR(g),OGATE,P-FLIGHT,XS(D)::QAR1(C),XR(g)
      • Refutation
        • K(f);N_SPINR(g),P-FLIGHT,XS(F)
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_SPINB(b),N_SPINR(g),OGATE,P-FLIGHT::QAR1(C),XR(g)
      • Refutation
        • K(f);N_SPINR(g),P-FLIGHT,XS(F)
    • Try
      • B(I);CHECK,XR(g)
      • Refutation
        • K(f);N_SPINB(b),S_FLIGHT,XB(I)
    • Try
      • R(A);CHECK,XB(b)
      • Refutation
        • S(a);XR(A)
    • Try
      • R(B);CHECK,XB(b)
      • Vars
        • K(f);N_SPINR(g),S_FLIGHT,XP(G)::QAB1(C)
      • Refutation
        • S(a);P_SPINS(a),XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(f);N_SPINB(b),N_SPINR(g),OGATEB,S_FLIGHT,XP(G)::QAB1(C)
      • Refutation
        • R(i);
    • Try
      • Q(C);
      • Threat
        • QAB(C)+P(G)
      • Vars
        • P(h);N_GUARD::QAR2(C)
      • Refutation
        • R(i);XP(H)
  • Actual
    • S(F);N_PINR(g)
    • Threat
      • QAB(C)+S(D)
    • Vars
      • K(f);N_SPINB(b),S_FLIGHT::S(D)
      • K(f);N_SPINB(b),S_FLIGHT,XP(G)::R(B)+S(D),DCHECK
      • R(g);SBLOCK,XP(G)::B(I)+S(F)
      • R(g);::QAB(C)+S(D),XR(g)
      • R(g);P_PINS(D),SBLOCK::B(I)+S(F)
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